mpt3sas_ctl.c 98.4 KB
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/*
 * Management Module Support for MPT (Message Passing Technology) based
 * controllers
 *
 * This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.c
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 * Copyright (C) 2012-2014  LSI Corporation
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 * Copyright (C) 2013-2014 Avago Technologies
 *  (mailto: [email protected])
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 *
 * 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/delay.h>
#include <linux/compat.h>
#include <linux/poll.h>

#include <linux/io.h>
#include <linux/uaccess.h>

#include "mpt3sas_base.h"
#include "mpt3sas_ctl.h"


static struct fasync_struct *async_queue;
static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);


/**
 * enum block_state - blocking state
 * @NON_BLOCKING: non blocking
 * @BLOCKING: blocking
 *
 * These states are for ioctls that need to wait for a response
 * from firmware, so they probably require sleep.
 */
enum block_state {
	NON_BLOCKING,
	BLOCKING,
};

/**
 * _ctl_sas_device_find_by_handle - sas device search
 * @ioc: per adapter object
 * @handle: sas device handle (assigned by firmware)
 * Context: Calling function should acquire ioc->sas_device_lock
 *
 * This searches for sas_device based on sas_address, then return sas_device
 * object.
 */
static struct _sas_device *
_ctl_sas_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
{
	struct _sas_device *sas_device, *r;

	r = NULL;
	list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
		if (sas_device->handle != handle)
			continue;
		r = sas_device;
		goto out;
	}

 out:
	return r;
}

/**
 * _ctl_display_some_debug - debug routine
 * @ioc: per adapter object
 * @smid: system request message index
 * @calling_function_name: string pass from calling function
 * @mpi_reply: reply message frame
 * Context: none.
 *
 * Function for displaying debug info helpful when debugging issues
 * in this module.
 */
static void
_ctl_display_some_debug(struct MPT3SAS_ADAPTER *ioc, u16 smid,
	char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
{
	Mpi2ConfigRequest_t *mpi_request;
	char *desc = NULL;

	if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
		return;

	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
	switch (mpi_request->Function) {
	case MPI2_FUNCTION_SCSI_IO_REQUEST:
	{
		Mpi2SCSIIORequest_t *scsi_request =
		    (Mpi2SCSIIORequest_t *)mpi_request;

		snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
		    "scsi_io, cmd(0x%02x), cdb_len(%d)",
		    scsi_request->CDB.CDB32[0],
		    le16_to_cpu(scsi_request->IoFlags) & 0xF);
		desc = ioc->tmp_string;
		break;
	}
	case MPI2_FUNCTION_SCSI_TASK_MGMT:
		desc = "task_mgmt";
		break;
	case MPI2_FUNCTION_IOC_INIT:
		desc = "ioc_init";
		break;
	case MPI2_FUNCTION_IOC_FACTS:
		desc = "ioc_facts";
		break;
	case MPI2_FUNCTION_CONFIG:
	{
		Mpi2ConfigRequest_t *config_request =
		    (Mpi2ConfigRequest_t *)mpi_request;

		snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
		    "config, type(0x%02x), ext_type(0x%02x), number(%d)",
		    (config_request->Header.PageType &
		     MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
		    config_request->Header.PageNumber);
		desc = ioc->tmp_string;
		break;
	}
	case MPI2_FUNCTION_PORT_FACTS:
		desc = "port_facts";
		break;
	case MPI2_FUNCTION_PORT_ENABLE:
		desc = "port_enable";
		break;
	case MPI2_FUNCTION_EVENT_NOTIFICATION:
		desc = "event_notification";
		break;
	case MPI2_FUNCTION_FW_DOWNLOAD:
		desc = "fw_download";
		break;
	case MPI2_FUNCTION_FW_UPLOAD:
		desc = "fw_upload";
		break;
	case MPI2_FUNCTION_RAID_ACTION:
		desc = "raid_action";
		break;
	case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
	{
		Mpi2SCSIIORequest_t *scsi_request =
		    (Mpi2SCSIIORequest_t *)mpi_request;

		snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
		    "raid_pass, cmd(0x%02x), cdb_len(%d)",
		    scsi_request->CDB.CDB32[0],
		    le16_to_cpu(scsi_request->IoFlags) & 0xF);
		desc = ioc->tmp_string;
		break;
	}
	case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
		desc = "sas_iounit_cntl";
		break;
	case MPI2_FUNCTION_SATA_PASSTHROUGH:
		desc = "sata_pass";
		break;
	case MPI2_FUNCTION_DIAG_BUFFER_POST:
		desc = "diag_buffer_post";
		break;
	case MPI2_FUNCTION_DIAG_RELEASE:
		desc = "diag_release";
		break;
	case MPI2_FUNCTION_SMP_PASSTHROUGH:
		desc = "smp_passthrough";
		break;
	}

	if (!desc)
		return;

	pr_info(MPT3SAS_FMT "%s: %s, smid(%d)\n",
	    ioc->name, calling_function_name, desc, smid);

	if (!mpi_reply)
		return;

	if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
		pr_info(MPT3SAS_FMT
		    "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
		    ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
		    le32_to_cpu(mpi_reply->IOCLogInfo));

	if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
	    mpi_request->Function ==
	    MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
		Mpi2SCSIIOReply_t *scsi_reply =
		    (Mpi2SCSIIOReply_t *)mpi_reply;
		struct _sas_device *sas_device = NULL;
		unsigned long flags;

		spin_lock_irqsave(&ioc->sas_device_lock, flags);
		sas_device = _ctl_sas_device_find_by_handle(ioc,
		    le16_to_cpu(scsi_reply->DevHandle));
		if (sas_device) {
			pr_warn(MPT3SAS_FMT "\tsas_address(0x%016llx), phy(%d)\n",
				ioc->name, (unsigned long long)
			    sas_device->sas_address, sas_device->phy);
			pr_warn(MPT3SAS_FMT
			    "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
			    ioc->name, (unsigned long long)
			    sas_device->enclosure_logical_id, sas_device->slot);
		}
		spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
		if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
			pr_info(MPT3SAS_FMT
			    "\tscsi_state(0x%02x), scsi_status"
			    "(0x%02x)\n", ioc->name,
			    scsi_reply->SCSIState,
			    scsi_reply->SCSIStatus);
	}
}

/**
 * mpt3sas_ctl_done - ctl module completion routine
 * @ioc: per adapter object
 * @smid: system request message index
 * @msix_index: MSIX table index supplied by the OS
 * @reply: reply message frame(lower 32bit addr)
 * Context: none.
 *
 * The callback handler when using ioc->ctl_cb_idx.
 *
 * Return 1 meaning mf should be freed from _base_interrupt
 *        0 means the mf is freed from this function.
 */
u8
mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
	u32 reply)
{
	MPI2DefaultReply_t *mpi_reply;
	Mpi2SCSIIOReply_t *scsiio_reply;
	const void *sense_data;
	u32 sz;

	if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED)
		return 1;
	if (ioc->ctl_cmds.smid != smid)
		return 1;
	ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE;
	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
	if (mpi_reply) {
		memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
		ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID;
		/* get sense data */
		if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
		    mpi_reply->Function ==
		    MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
			scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
			if (scsiio_reply->SCSIState &
			    MPI2_SCSI_STATE_AUTOSENSE_VALID) {
				sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
				    le32_to_cpu(scsiio_reply->SenseCount));
				sense_data = mpt3sas_base_get_sense_buffer(ioc,
				    smid);
				memcpy(ioc->ctl_cmds.sense, sense_data, sz);
			}
		}
	}
	_ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
	ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING;
	complete(&ioc->ctl_cmds.done);
	return 1;
}

/**
 * _ctl_check_event_type - determines when an event needs logging
 * @ioc: per adapter object
 * @event: firmware event
 *
 * The bitmask in ioc->event_type[] indicates which events should be
 * be saved in the driver event_log.  This bitmask is set by application.
 *
 * Returns 1 when event should be captured, or zero means no match.
 */
static int
_ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event)
{
	u16 i;
	u32 desired_event;

	if (event >= 128 || !event || !ioc->event_log)
		return 0;

	desired_event = (1 << (event % 32));
	if (!desired_event)
		desired_event = 1;
	i = event / 32;
	return desired_event & ioc->event_type[i];
}

/**
 * mpt3sas_ctl_add_to_event_log - add event
 * @ioc: per adapter object
 * @mpi_reply: reply message frame
 *
 * Return nothing.
 */
void
mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc,
	Mpi2EventNotificationReply_t *mpi_reply)
{
	struct MPT3_IOCTL_EVENTS *event_log;
	u16 event;
	int i;
	u32 sz, event_data_sz;
	u8 send_aen = 0;

	if (!ioc->event_log)
		return;

	event = le16_to_cpu(mpi_reply->Event);

	if (_ctl_check_event_type(ioc, event)) {

		/* insert entry into circular event_log */
		i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE;
		event_log = ioc->event_log;
		event_log[i].event = event;
		event_log[i].context = ioc->event_context++;

		event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
		sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE);
		memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE);
		memcpy(event_log[i].data, mpi_reply->EventData, sz);
		send_aen = 1;
	}

	/* This aen_event_read_flag flag is set until the
	 * application has read the event log.
	 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
	 */
	if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
	    (send_aen && !ioc->aen_event_read_flag)) {
		ioc->aen_event_read_flag = 1;
		wake_up_interruptible(&ctl_poll_wait);
		if (async_queue)
			kill_fasync(&async_queue, SIGIO, POLL_IN);
	}
}

/**
 * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time)
 * @ioc: per adapter object
 * @msix_index: MSIX table index supplied by the OS
 * @reply: reply message frame(lower 32bit addr)
 * Context: interrupt.
 *
 * This function merely adds a new work task into ioc->firmware_event_thread.
 * The tasks are worked from _firmware_event_work in user context.
 *
 * Return 1 meaning mf should be freed from _base_interrupt
 *        0 means the mf is freed from this function.
 */
u8
mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
	u32 reply)
{
	Mpi2EventNotificationReply_t *mpi_reply;

	mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
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	if (mpi_reply)
		mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
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	return 1;
}

/**
 * _ctl_verify_adapter - validates ioc_number passed from application
 * @ioc: per adapter object
 * @iocpp: The ioc pointer is returned in this.
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 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
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 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
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 *
 * Return (-1) means error, else ioc_number.
 */
static int
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_ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
							int mpi_version)
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{
	struct MPT3SAS_ADAPTER *ioc;
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	int version = 0;
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	/* global ioc lock to protect controller on list operations */
	spin_lock(&gioc_lock);
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	list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
		if (ioc->id != ioc_number)
			continue;
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		/* Check whether this ioctl command is from right
		 * ioctl device or not, if not continue the search.
		 */
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		version = ioc->hba_mpi_version_belonged;
		/* MPI25_VERSION and MPI26_VERSION uses same ioctl
		 * device.
		 */
		if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) {
			if ((version == MPI25_VERSION) ||
				(version == MPI26_VERSION))
				goto out;
			else
				continue;
		} else {
			if (version != mpi_version)
				continue;
		}
out:
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		spin_unlock(&gioc_lock);
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		*iocpp = ioc;
		return ioc_number;
	}
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	spin_unlock(&gioc_lock);
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	*iocpp = NULL;
	return -1;
}

/**
 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
 * @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
 */
void
mpt3sas_ctl_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
{
	int i;
	u8 issue_reset;

	switch (reset_phase) {
	case MPT3_IOC_PRE_RESET:
		dtmprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
		for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
			if (!(ioc->diag_buffer_status[i] &
			    MPT3_DIAG_BUFFER_IS_REGISTERED))
				continue;
			if ((ioc->diag_buffer_status[i] &
			    MPT3_DIAG_BUFFER_IS_RELEASED))
				continue;
			mpt3sas_send_diag_release(ioc, i, &issue_reset);
		}
		break;
	case MPT3_IOC_AFTER_RESET:
		dtmprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
		if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) {
			ioc->ctl_cmds.status |= MPT3_CMD_RESET;
			mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
			complete(&ioc->ctl_cmds.done);
		}
		break;
	case MPT3_IOC_DONE_RESET:
		dtmprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));

		for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
			if (!(ioc->diag_buffer_status[i] &
			    MPT3_DIAG_BUFFER_IS_REGISTERED))
				continue;
			if ((ioc->diag_buffer_status[i] &
			    MPT3_DIAG_BUFFER_IS_RELEASED))
				continue;
			ioc->diag_buffer_status[i] |=
			    MPT3_DIAG_BUFFER_IS_DIAG_RESET;
		}
		break;
	}
}

/**
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 * _ctl_fasync -
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 * @fd -
 * @filep -
 * @mode -
 *
 * Called when application request fasyn callback handler.
 */
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static int
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_ctl_fasync(int fd, struct file *filep, int mode)
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{
	return fasync_helper(fd, filep, mode, &async_queue);
}

/**
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 * _ctl_poll -
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 * @file -
 * @wait -
 *
 */
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static unsigned int
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_ctl_poll(struct file *filep, poll_table *wait)
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{
	struct MPT3SAS_ADAPTER *ioc;

	poll_wait(filep, &ctl_poll_wait, wait);

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	/* global ioc lock to protect controller on list operations */
	spin_lock(&gioc_lock);
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	list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
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		if (ioc->aen_event_read_flag) {
			spin_unlock(&gioc_lock);
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			return POLLIN | POLLRDNORM;
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		}
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	}
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	spin_unlock(&gioc_lock);
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	return 0;
}

/**
 * _ctl_set_task_mid - assign an active smid to tm request
 * @ioc: per adapter object
 * @karg - (struct mpt3_ioctl_command)
 * @tm_request - pointer to mf from user space
 *
 * Returns 0 when an smid if found, else fail.
 * during failure, the reply frame is filled.
 */
static int
_ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
	Mpi2SCSITaskManagementRequest_t *tm_request)
{
	u8 found = 0;
	u16 i;
	u16 handle;
	struct scsi_cmnd *scmd;
	struct MPT3SAS_DEVICE *priv_data;
	unsigned long flags;
	Mpi2SCSITaskManagementReply_t *tm_reply;
	u32 sz;
	u32 lun;
	char *desc = NULL;

	if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
		desc = "abort_task";
	else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
		desc = "query_task";
	else
		return 0;

	lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);

	handle = le16_to_cpu(tm_request->DevHandle);
	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
	for (i = ioc->scsiio_depth; i && !found; i--) {
		scmd = ioc->scsi_lookup[i - 1].scmd;
		if (scmd == NULL || scmd->device == NULL ||
		    scmd->device->hostdata == NULL)
			continue;
		if (lun != scmd->device->lun)
			continue;
		priv_data = scmd->device->hostdata;
		if (priv_data->sas_target == NULL)
			continue;
		if (priv_data->sas_target->handle != handle)
			continue;
		tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
		found = 1;
	}
	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);

	if (!found) {
		dctlprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: handle(0x%04x), lun(%d), no active mid!!\n",
			ioc->name,
		    desc, le16_to_cpu(tm_request->DevHandle), lun));
		tm_reply = ioc->ctl_cmds.reply;
		tm_reply->DevHandle = tm_request->DevHandle;
		tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
		tm_reply->TaskType = tm_request->TaskType;
		tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
		tm_reply->VP_ID = tm_request->VP_ID;
		tm_reply->VF_ID = tm_request->VF_ID;
		sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
		if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
		    sz))
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
		return 1;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT
		"%s: handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
	    desc, le16_to_cpu(tm_request->DevHandle), lun,
	     le16_to_cpu(tm_request->TaskMID)));
	return 0;
}

/**
 * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode
 * @ioc: per adapter object
 * @karg - (struct mpt3_ioctl_command)
 * @mf - pointer to mf in user space
 */
static long
_ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
	void __user *mf)
{
	MPI2RequestHeader_t *mpi_request = NULL, *request;
	MPI2DefaultReply_t *mpi_reply;
	u32 ioc_state;
	u16 smid;
645
	unsigned long timeout;
646 647 648 649 650 651 652 653 654 655 656
	u8 issue_reset;
	u32 sz;
	void *psge;
	void *data_out = NULL;
	dma_addr_t data_out_dma = 0;
	size_t data_out_sz = 0;
	void *data_in = NULL;
	dma_addr_t data_in_dma = 0;
	size_t data_in_sz = 0;
	long ret;
	u16 wait_state_count;
657
	u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741

	issue_reset = 0;

	if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
		pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
		    ioc->name, __func__);
		ret = -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__);
			ret = -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);
	}
	if (wait_state_count)
		pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
		    ioc->name, __func__);

	mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
	if (!mpi_request) {
		pr_err(MPT3SAS_FMT
			"%s: failed obtaining a memory for mpi_request\n",
			ioc->name, __func__);
		ret = -ENOMEM;
		goto out;
	}

	/* Check for overflow and wraparound */
	if (karg.data_sge_offset * 4 > ioc->request_sz ||
	    karg.data_sge_offset > (UINT_MAX / 4)) {
		ret = -EINVAL;
		goto out;
	}

	/* copy in request message frame from user */
	if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
		pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__,
		    __func__);
		ret = -EFAULT;
		goto out;
	}

	if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
		smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
		if (!smid) {
			pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
			    ioc->name, __func__);
			ret = -EAGAIN;
			goto out;
		}
	} else {

		smid = mpt3sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
		if (!smid) {
			pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
			    ioc->name, __func__);
			ret = -EAGAIN;
			goto out;
		}
	}

	ret = 0;
	ioc->ctl_cmds.status = MPT3_CMD_PENDING;
	memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
	request = mpt3sas_base_get_msg_frame(ioc, smid);
	memcpy(request, mpi_request, karg.data_sge_offset*4);
	ioc->ctl_cmds.smid = smid;
	data_out_sz = karg.data_out_size;
	data_in_sz = karg.data_in_size;

	if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
742 743 744 745 746 747 748
	    mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
	    mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
	    mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH) {

		device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
		if (!device_handle || (device_handle >
		    ioc->facts.MaxDevHandle)) {
749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803
			ret = -EINVAL;
			mpt3sas_base_free_smid(ioc, smid);
			goto out;
		}
	}

	/* obtain dma-able memory for data transfer */
	if (data_out_sz) /* WRITE */ {
		data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
		    &data_out_dma);
		if (!data_out) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret = -ENOMEM;
			mpt3sas_base_free_smid(ioc, smid);
			goto out;
		}
		if (copy_from_user(data_out, karg.data_out_buf_ptr,
			data_out_sz)) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret =  -EFAULT;
			mpt3sas_base_free_smid(ioc, smid);
			goto out;
		}
	}

	if (data_in_sz) /* READ */ {
		data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
		    &data_in_dma);
		if (!data_in) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret = -ENOMEM;
			mpt3sas_base_free_smid(ioc, smid);
			goto out;
		}
	}

	psge = (void *)request + (karg.data_sge_offset*4);

	/* send command to firmware */
	_ctl_display_some_debug(ioc, smid, "ctl_request", NULL);

	init_completion(&ioc->ctl_cmds.done);
	switch (mpi_request->Function) {
	case MPI2_FUNCTION_SCSI_IO_REQUEST:
	case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
	{
		Mpi2SCSIIORequest_t *scsiio_request =
		    (Mpi2SCSIIORequest_t *)request;
		scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
		scsiio_request->SenseBufferLowAddress =
		    mpt3sas_base_get_sense_buffer_dma(ioc, smid);
		memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
804 805 806 807 808 809 810 811
		if (test_bit(device_handle, ioc->device_remove_in_progress)) {
			dtmprintk(ioc, pr_info(MPT3SAS_FMT
				"handle(0x%04x) :ioctl failed due to device removal in progress\n",
				ioc->name, device_handle));
			mpt3sas_base_free_smid(ioc, smid);
			ret = -EINVAL;
			goto out;
		}
812 813 814
		ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
		    data_in_dma, data_in_sz);
		if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
815
			ioc->put_smid_scsi_io(ioc, smid, device_handle);
816
		else
817
			ioc->put_smid_default(ioc, smid);
818 819 820 821 822 823 824 825 826 827 828
		break;
	}
	case MPI2_FUNCTION_SCSI_TASK_MGMT:
	{
		Mpi2SCSITaskManagementRequest_t *tm_request =
		    (Mpi2SCSITaskManagementRequest_t *)request;

		dtmprintk(ioc, pr_info(MPT3SAS_FMT
			"TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
			ioc->name,
		    le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
829
		ioc->got_task_abort_from_ioctl = 1;
830 831 832 833 834 835
		if (tm_request->TaskType ==
		    MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
		    tm_request->TaskType ==
		    MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
			if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
				mpt3sas_base_free_smid(ioc, smid);
836
				ioc->got_task_abort_from_ioctl = 0;
837 838 839
				goto out;
			}
		}
840
		ioc->got_task_abort_from_ioctl = 0;
841

842 843 844 845 846 847 848 849
		if (test_bit(device_handle, ioc->device_remove_in_progress)) {
			dtmprintk(ioc, pr_info(MPT3SAS_FMT
				"handle(0x%04x) :ioctl failed due to device removal in progress\n",
				ioc->name, device_handle));
			mpt3sas_base_free_smid(ioc, smid);
			ret = -EINVAL;
			goto out;
		}
850 851 852 853
		mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
		    tm_request->DevHandle));
		ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
		    data_in_dma, data_in_sz);
854
		ioc->put_smid_hi_priority(ioc, smid, 0);
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884
		break;
	}
	case MPI2_FUNCTION_SMP_PASSTHROUGH:
	{
		Mpi2SmpPassthroughRequest_t *smp_request =
		    (Mpi2SmpPassthroughRequest_t *)mpi_request;
		u8 *data;

		/* ioc determines which port to use */
		smp_request->PhysicalPort = 0xFF;
		if (smp_request->PassthroughFlags &
		    MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
			data = (u8 *)&smp_request->SGL;
		else {
			if (unlikely(data_out == NULL)) {
				pr_err("failure at %s:%d/%s()!\n",
				    __FILE__, __LINE__, __func__);
				mpt3sas_base_free_smid(ioc, smid);
				ret = -EINVAL;
				goto out;
			}
			data = data_out;
		}

		if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
			ioc->ioc_link_reset_in_progress = 1;
			ioc->ignore_loginfos = 1;
		}
		ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
		    data_in_sz);
885
		ioc->put_smid_default(ioc, smid);
886 887 888
		break;
	}
	case MPI2_FUNCTION_SATA_PASSTHROUGH:
889 890 891 892 893 894 895 896 897 898 899
	{
		if (test_bit(device_handle, ioc->device_remove_in_progress)) {
			dtmprintk(ioc, pr_info(MPT3SAS_FMT
				"handle(0x%04x) :ioctl failed due to device removal in progress\n",
				ioc->name, device_handle));
			mpt3sas_base_free_smid(ioc, smid);
			ret = -EINVAL;
			goto out;
		}
		ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
		    data_in_sz);
900
		ioc->put_smid_default(ioc, smid);
901 902
		break;
	}
903 904 905 906 907
	case MPI2_FUNCTION_FW_DOWNLOAD:
	case MPI2_FUNCTION_FW_UPLOAD:
	{
		ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
		    data_in_sz);
908
		ioc->put_smid_default(ioc, smid);
909 910 911 912 913 914 915 916 917 918 919 920 921 922
		break;
	}
	case MPI2_FUNCTION_TOOLBOX:
	{
		Mpi2ToolboxCleanRequest_t *toolbox_request =
			(Mpi2ToolboxCleanRequest_t *)mpi_request;

		if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) {
			ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
				data_in_dma, data_in_sz);
		} else {
			ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
				data_in_dma, data_in_sz);
		}
923
		ioc->put_smid_default(ioc, smid);
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941
		break;
	}
	case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
	{
		Mpi2SasIoUnitControlRequest_t *sasiounit_request =
		    (Mpi2SasIoUnitControlRequest_t *)mpi_request;

		if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
		    || sasiounit_request->Operation ==
		    MPI2_SAS_OP_PHY_LINK_RESET) {
			ioc->ioc_link_reset_in_progress = 1;
			ioc->ignore_loginfos = 1;
		}
		/* drop to default case for posting the request */
	}
	default:
		ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
		    data_in_dma, data_in_sz);
942
		ioc->put_smid_default(ioc, smid);
943 944 945 946 947 948 949
		break;
	}

	if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
		timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
	else
		timeout = karg.timeout;
950
	wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985
	if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
		Mpi2SCSITaskManagementRequest_t *tm_request =
		    (Mpi2SCSITaskManagementRequest_t *)mpi_request;
		mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
		    tm_request->DevHandle));
		mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
	} else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
	    mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
		ioc->ioc_link_reset_in_progress) {
		ioc->ioc_link_reset_in_progress = 0;
		ioc->ignore_loginfos = 0;
	}
	if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
		pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
		    __func__);
		_debug_dump_mf(mpi_request, karg.data_sge_offset);
		if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

	mpi_reply = ioc->ctl_cmds.reply;

	if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
	    (ioc->logging_level & MPT_DEBUG_TM)) {
		Mpi2SCSITaskManagementReply_t *tm_reply =
		    (Mpi2SCSITaskManagementReply_t *)mpi_reply;

		pr_info(MPT3SAS_FMT "TASK_MGMT: " \
		    "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
		    "TerminationCount(0x%08x)\n", ioc->name,
		    le16_to_cpu(tm_reply->IOCStatus),
		    le32_to_cpu(tm_reply->IOCLogInfo),
		    le32_to_cpu(tm_reply->TerminationCount));
	}
986

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
	/* copy out xdata to user */
	if (data_in_sz) {
		if (copy_to_user(karg.data_in_buf_ptr, data_in,
		    data_in_sz)) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret = -ENODATA;
			goto out;
		}
	}

	/* copy out reply message frame to user */
	if (karg.max_reply_bytes) {
		sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
		if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
		    sz)) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret = -ENODATA;
			goto out;
		}
	}

	/* copy out sense to user */
	if (karg.max_sense_bytes && (mpi_request->Function ==
	    MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
	    MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
		sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
		if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense,
		    sz)) {
			pr_err("failure at %s:%d/%s()!\n", __FILE__,
			    __LINE__, __func__);
			ret = -ENODATA;
			goto out;
		}
	}

 issue_host_reset:
	if (issue_reset) {
		ret = -ENODATA;
		if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
		    mpi_request->Function ==
		    MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
		    mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
			pr_info(MPT3SAS_FMT "issue target reset: handle = (0x%04x)\n",
				ioc->name,
				le16_to_cpu(mpi_request->FunctionDependent1));
			mpt3sas_halt_firmware(ioc);
1035
			mpt3sas_scsih_issue_locked_tm(ioc,
1036
			    le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
1037
			    0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 30);
1038
		} else
1039
			mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
	}

 out:

	/* free memory associated with sg buffers */
	if (data_in)
		pci_free_consistent(ioc->pdev, data_in_sz, data_in,
		    data_in_dma);

	if (data_out)
		pci_free_consistent(ioc->pdev, data_out_sz, data_out,
		    data_out_dma);

	kfree(mpi_request);
	ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
	return ret;
}

/**
 * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_iocinfo karg;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
	    __func__));

	memset(&karg, 0 , sizeof(karg));
	if (ioc->pfacts)
		karg.port_number = ioc->pfacts[0].PortNumber;
	karg.hw_rev = ioc->pdev->revision;
	karg.pci_id = ioc->pdev->device;
	karg.subsystem_device = ioc->pdev->subsystem_device;
	karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
	karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
	karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
	karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
	karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
	karg.firmware_version = ioc->facts.FWVersion.Word;
1089
	strcpy(karg.driver_version, ioc->driver_name);
1090
	strcat(karg.driver_version, "-");
1091 1092
	switch  (ioc->hba_mpi_version_belonged) {
	case MPI2_VERSION:
1093 1094 1095 1096
		if (ioc->is_warpdrive)
			karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
		else
			karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1097 1098 1099
		strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
		break;
	case MPI25_VERSION:
1100
	case MPI26_VERSION:
1101 1102 1103 1104
		if (ioc->is_gen35_ioc)
			karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35;
		else
			karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
1105 1106 1107
		strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
		break;
	}
1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
	karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);

	if (copy_to_user(arg, &karg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}
	return 0;
}

/**
 * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_eventquery karg;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
	    __func__));

	karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE;
	memcpy(karg.event_types, ioc->event_type,
	    MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));

	if (copy_to_user(arg, &karg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}
	return 0;
}

/**
 * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_eventenable karg;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
	    __func__));

	memcpy(ioc->event_type, karg.event_types,
	    MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
	mpt3sas_base_validate_event_type(ioc, ioc->event_type);

	if (ioc->event_log)
		return 0;
	/* initialize event_log */
	ioc->event_context = 0;
	ioc->aen_event_read_flag = 0;
	ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE,
	    sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL);
	if (!ioc->event_log) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -ENOMEM;
	}
	return 0;
}

/**
 * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_eventreport karg;
	u32 number_bytes, max_events, max;
	struct mpt3_ioctl_eventreport __user *uarg = arg;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
	    __func__));

	number_bytes = karg.hdr.max_data_size -
	    sizeof(struct mpt3_ioctl_header);
	max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS);
	max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events);

	/* If fewer than 1 event is requested, there must have
	 * been some type of error.
	 */
	if (!max || !ioc->event_log)
		return -ENODATA;

	number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS);
	if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	/* reset flag so SIGIO can restart */
	ioc->aen_event_read_flag = 0;
	return 0;
}

/**
 * _ctl_do_reset - main handler for MPT3HARDRESET opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_diag_reset karg;
	int retval;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	if (ioc->shost_recovery || ioc->pci_error_recovery ||
	    ioc->is_driver_loading)
		return -EAGAIN;

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
	    __func__));

1255
	retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530
	pr_info(MPT3SAS_FMT "host reset: %s\n",
	    ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
	return 0;
}

/**
 * _ctl_btdh_search_sas_device - searching for sas device
 * @ioc: per adapter object
 * @btdh: btdh ioctl payload
 */
static int
_ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc,
	struct mpt3_ioctl_btdh_mapping *btdh)
{
	struct _sas_device *sas_device;
	unsigned long flags;
	int rc = 0;

	if (list_empty(&ioc->sas_device_list))
		return rc;

	spin_lock_irqsave(&ioc->sas_device_lock, flags);
	list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
		if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
		    btdh->handle == sas_device->handle) {
			btdh->bus = sas_device->channel;
			btdh->id = sas_device->id;
			rc = 1;
			goto out;
		} else if (btdh->bus == sas_device->channel && btdh->id ==
		    sas_device->id && btdh->handle == 0xFFFF) {
			btdh->handle = sas_device->handle;
			rc = 1;
			goto out;
		}
	}
 out:
	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
	return rc;
}

/**
 * _ctl_btdh_search_raid_device - searching for raid device
 * @ioc: per adapter object
 * @btdh: btdh ioctl payload
 */
static int
_ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc,
	struct mpt3_ioctl_btdh_mapping *btdh)
{
	struct _raid_device *raid_device;
	unsigned long flags;
	int rc = 0;

	if (list_empty(&ioc->raid_device_list))
		return rc;

	spin_lock_irqsave(&ioc->raid_device_lock, flags);
	list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
		if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
		    btdh->handle == raid_device->handle) {
			btdh->bus = raid_device->channel;
			btdh->id = raid_device->id;
			rc = 1;
			goto out;
		} else if (btdh->bus == raid_device->channel && btdh->id ==
		    raid_device->id && btdh->handle == 0xFFFF) {
			btdh->handle = raid_device->handle;
			rc = 1;
			goto out;
		}
	}
 out:
	spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
	return rc;
}

/**
 * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_ioctl_btdh_mapping karg;
	int rc;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	rc = _ctl_btdh_search_sas_device(ioc, &karg);
	if (!rc)
		_ctl_btdh_search_raid_device(ioc, &karg);

	if (copy_to_user(arg, &karg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}
	return 0;
}

/**
 * _ctl_diag_capability - return diag buffer capability
 * @ioc: per adapter object
 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
 *
 * returns 1 when diag buffer support is enabled in firmware
 */
static u8
_ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type)
{
	u8 rc = 0;

	switch (buffer_type) {
	case MPI2_DIAG_BUF_TYPE_TRACE:
		if (ioc->facts.IOCCapabilities &
		    MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
			rc = 1;
		break;
	case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
		if (ioc->facts.IOCCapabilities &
		    MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
			rc = 1;
		break;
	case MPI2_DIAG_BUF_TYPE_EXTENDED:
		if (ioc->facts.IOCCapabilities &
		    MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
			rc = 1;
	}

	return rc;
}


/**
 * _ctl_diag_register_2 - wrapper for registering diag buffer support
 * @ioc: per adapter object
 * @diag_register: the diag_register struct passed in from user space
 *
 */
static long
_ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
	struct mpt3_diag_register *diag_register)
{
	int rc, i;
	void *request_data = NULL;
	dma_addr_t request_data_dma;
	u32 request_data_sz = 0;
	Mpi2DiagBufferPostRequest_t *mpi_request;
	Mpi2DiagBufferPostReply_t *mpi_reply;
	u8 buffer_type;
	u16 smid;
	u16 ioc_status;
	u32 ioc_state;
	u8 issue_reset = 0;

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		pr_err(MPT3SAS_FMT
		    "%s: failed due to ioc not operational\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
		pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	buffer_type = diag_register->buffer_type;
	if (!_ctl_diag_capability(ioc, buffer_type)) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have capability for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -EPERM;
	}

	if (ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_REGISTERED) {
		pr_err(MPT3SAS_FMT
			"%s: already has a registered buffer for buffer_type(0x%02x)\n",
			ioc->name, __func__,
		    buffer_type);
		return -EINVAL;
	}

	if (diag_register->requested_buffer_size % 4)  {
		pr_err(MPT3SAS_FMT
			"%s: the requested_buffer_size is not 4 byte aligned\n",
			ioc->name, __func__);
		return -EINVAL;
	}

	smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
	if (!smid) {
		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	rc = 0;
	ioc->ctl_cmds.status = MPT3_CMD_PENDING;
	memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
	ioc->ctl_cmds.smid = smid;

	request_data = ioc->diag_buffer[buffer_type];
	request_data_sz = diag_register->requested_buffer_size;
	ioc->unique_id[buffer_type] = diag_register->unique_id;
	ioc->diag_buffer_status[buffer_type] = 0;
	memcpy(ioc->product_specific[buffer_type],
	    diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS);
	ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;

	if (request_data) {
		request_data_dma = ioc->diag_buffer_dma[buffer_type];
		if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
			pci_free_consistent(ioc->pdev,
			    ioc->diag_buffer_sz[buffer_type],
			    request_data, request_data_dma);
			request_data = NULL;
		}
	}

	if (request_data == NULL) {
		ioc->diag_buffer_sz[buffer_type] = 0;
		ioc->diag_buffer_dma[buffer_type] = 0;
		request_data = pci_alloc_consistent(
			ioc->pdev, request_data_sz, &request_data_dma);
		if (request_data == NULL) {
			pr_err(MPT3SAS_FMT "%s: failed allocating memory" \
			    " for diag buffers, requested size(%d)\n",
			    ioc->name, __func__, request_data_sz);
			mpt3sas_base_free_smid(ioc, smid);
			return -ENOMEM;
		}
		ioc->diag_buffer[buffer_type] = request_data;
		ioc->diag_buffer_sz[buffer_type] = request_data_sz;
		ioc->diag_buffer_dma[buffer_type] = request_data_dma;
	}

	mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
	mpi_request->BufferType = diag_register->buffer_type;
	mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
	mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
	mpi_request->BufferLength = cpu_to_le32(request_data_sz);
	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;

	dctlprintk(ioc, pr_info(MPT3SAS_FMT
		"%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
		ioc->name, __func__, request_data,
	    (unsigned long long)request_data_dma,
	    le32_to_cpu(mpi_request->BufferLength)));

	for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
		mpi_request->ProductSpecific[i] =
			cpu_to_le32(ioc->product_specific[buffer_type][i]);

	init_completion(&ioc->ctl_cmds.done);
1531
	ioc->put_smid_default(ioc, smid);
1532
	wait_for_completion_timeout(&ioc->ctl_cmds.done,
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570
	    MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);

	if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
		pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
		    __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2DiagBufferPostRequest_t)/4);
		if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

	/* process the completed Reply Message Frame */
	if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
		pr_err(MPT3SAS_FMT "%s: no reply message\n",
		    ioc->name, __func__);
		rc = -EFAULT;
		goto out;
	}

	mpi_reply = ioc->ctl_cmds.reply;
	ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;

	if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
		ioc->diag_buffer_status[buffer_type] |=
			MPT3_DIAG_BUFFER_IS_REGISTERED;
		dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
		    ioc->name, __func__));
	} else {
		pr_info(MPT3SAS_FMT
			"%s: ioc_status(0x%04x) log_info(0x%08x)\n",
			ioc->name, __func__,
		    ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
		rc = -EFAULT;
	}

 issue_host_reset:
	if (issue_reset)
1571
		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877

 out:

	if (rc && request_data)
		pci_free_consistent(ioc->pdev, request_data_sz,
		    request_data, request_data_dma);

	ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
	return rc;
}

/**
 * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time
 * @ioc: per adapter object
 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
 *
 * This is called when command line option diag_buffer_enable is enabled
 * at driver load time.
 */
void
mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register)
{
	struct mpt3_diag_register diag_register;

	memset(&diag_register, 0, sizeof(struct mpt3_diag_register));

	if (bits_to_register & 1) {
		pr_info(MPT3SAS_FMT "registering trace buffer support\n",
		    ioc->name);
		ioc->diag_trigger_master.MasterData =
		    (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
		diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
		/* register for 2MB buffers  */
		diag_register.requested_buffer_size = 2 * (1024 * 1024);
		diag_register.unique_id = 0x7075900;
		_ctl_diag_register_2(ioc,  &diag_register);
	}

	if (bits_to_register & 2) {
		pr_info(MPT3SAS_FMT "registering snapshot buffer support\n",
		    ioc->name);
		diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
		/* register for 2MB buffers  */
		diag_register.requested_buffer_size = 2 * (1024 * 1024);
		diag_register.unique_id = 0x7075901;
		_ctl_diag_register_2(ioc,  &diag_register);
	}

	if (bits_to_register & 4) {
		pr_info(MPT3SAS_FMT "registering extended buffer support\n",
		    ioc->name);
		diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
		/* register for 2MB buffers  */
		diag_register.requested_buffer_size = 2 * (1024 * 1024);
		diag_register.unique_id = 0x7075901;
		_ctl_diag_register_2(ioc,  &diag_register);
	}
}

/**
 * _ctl_diag_register - application register with driver
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 *
 * This will allow the driver to setup any required buffers that will be
 * needed by firmware to communicate with the driver.
 */
static long
_ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_diag_register karg;
	long rc;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	rc = _ctl_diag_register_2(ioc, &karg);
	return rc;
}

/**
 * _ctl_diag_unregister - application unregister with driver
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 *
 * This will allow the driver to cleanup any memory allocated for diag
 * messages and to free up any resources.
 */
static long
_ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_diag_unregister karg;
	void *request_data;
	dma_addr_t request_data_dma;
	u32 request_data_sz;
	u8 buffer_type;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	buffer_type = karg.unique_id & 0x000000ff;
	if (!_ctl_diag_capability(ioc, buffer_type)) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have capability for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -EPERM;
	}

	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) is not registered\n",
			ioc->name, __func__, buffer_type);
		return -EINVAL;
	}
	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) has not been released\n",
			ioc->name, __func__, buffer_type);
		return -EINVAL;
	}

	if (karg.unique_id != ioc->unique_id[buffer_type]) {
		pr_err(MPT3SAS_FMT
			"%s: unique_id(0x%08x) is not registered\n",
			ioc->name, __func__, karg.unique_id);
		return -EINVAL;
	}

	request_data = ioc->diag_buffer[buffer_type];
	if (!request_data) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -ENOMEM;
	}

	request_data_sz = ioc->diag_buffer_sz[buffer_type];
	request_data_dma = ioc->diag_buffer_dma[buffer_type];
	pci_free_consistent(ioc->pdev, request_data_sz,
	    request_data, request_data_dma);
	ioc->diag_buffer[buffer_type] = NULL;
	ioc->diag_buffer_status[buffer_type] = 0;
	return 0;
}

/**
 * _ctl_diag_query - query relevant info associated with diag buffers
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 *
 * The application will send only buffer_type and unique_id.  Driver will
 * inspect unique_id first, if valid, fill in all the info.  If unique_id is
 * 0x00, the driver will return info specified by Buffer Type.
 */
static long
_ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_diag_query karg;
	void *request_data;
	int i;
	u8 buffer_type;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	karg.application_flags = 0;
	buffer_type = karg.buffer_type;

	if (!_ctl_diag_capability(ioc, buffer_type)) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have capability for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -EPERM;
	}

	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) is not registered\n",
			ioc->name, __func__, buffer_type);
		return -EINVAL;
	}

	if (karg.unique_id & 0xffffff00) {
		if (karg.unique_id != ioc->unique_id[buffer_type]) {
			pr_err(MPT3SAS_FMT
				"%s: unique_id(0x%08x) is not registered\n",
				ioc->name, __func__, karg.unique_id);
			return -EINVAL;
		}
	}

	request_data = ioc->diag_buffer[buffer_type];
	if (!request_data) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have buffer for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -ENOMEM;
	}

	if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED)
		karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
		    MPT3_APP_FLAGS_BUFFER_VALID);
	else
		karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
		    MPT3_APP_FLAGS_BUFFER_VALID |
		    MPT3_APP_FLAGS_FW_BUFFER_ACCESS);

	for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
		karg.product_specific[i] =
		    ioc->product_specific[buffer_type][i];

	karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
	karg.driver_added_buffer_size = 0;
	karg.unique_id = ioc->unique_id[buffer_type];
	karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];

	if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) {
		pr_err(MPT3SAS_FMT
			"%s: unable to write mpt3_diag_query data @ %p\n",
			ioc->name, __func__, arg);
		return -EFAULT;
	}
	return 0;
}

/**
 * mpt3sas_send_diag_release - Diag Release Message
 * @ioc: per adapter object
 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
 * @issue_reset - specifies whether host reset is required.
 *
 */
int
mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type,
	u8 *issue_reset)
{
	Mpi2DiagReleaseRequest_t *mpi_request;
	Mpi2DiagReleaseReply_t *mpi_reply;
	u16 smid;
	u16 ioc_status;
	u32 ioc_state;
	int rc;

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	rc = 0;
	*issue_reset = 0;

	ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
	if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		if (ioc->diag_buffer_status[buffer_type] &
		    MPT3_DIAG_BUFFER_IS_REGISTERED)
			ioc->diag_buffer_status[buffer_type] |=
			    MPT3_DIAG_BUFFER_IS_RELEASED;
		dctlprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: skipping due to FAULT state\n", ioc->name,
		    __func__));
		rc = -EAGAIN;
		goto out;
	}

	if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
		pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
	if (!smid) {
		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	ioc->ctl_cmds.status = MPT3_CMD_PENDING;
	memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
	ioc->ctl_cmds.smid = smid;

	mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
	mpi_request->BufferType = buffer_type;
	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;

	init_completion(&ioc->ctl_cmds.done);
1878
	ioc->put_smid_default(ioc, smid);
1879
	wait_for_completion_timeout(&ioc->ctl_cmds.done,
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
	    MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);

	if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
		pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
		    __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2DiagReleaseRequest_t)/4);
		if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
			*issue_reset = 1;
		rc = -EFAULT;
		goto out;
	}

	/* process the completed Reply Message Frame */
	if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
		pr_err(MPT3SAS_FMT "%s: no reply message\n",
		    ioc->name, __func__);
		rc = -EFAULT;
		goto out;
	}

	mpi_reply = ioc->ctl_cmds.reply;
	ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;

	if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
		ioc->diag_buffer_status[buffer_type] |=
		    MPT3_DIAG_BUFFER_IS_RELEASED;
		dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
		    ioc->name, __func__));
	} else {
		pr_info(MPT3SAS_FMT
			"%s: ioc_status(0x%04x) log_info(0x%08x)\n",
			ioc->name, __func__,
		    ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
		rc = -EFAULT;
	}

 out:
	ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
	return rc;
}

/**
 * _ctl_diag_release - request to send Diag Release Message to firmware
 * @arg - user space buffer containing ioctl content
 *
 * This allows ownership of the specified buffer to returned to the driver,
 * allowing an application to read the buffer without fear that firmware is
 * overwritting information in the buffer.
 */
static long
_ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_diag_release karg;
	void *request_data;
	int rc;
	u8 buffer_type;
	u8 issue_reset = 0;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	buffer_type = karg.unique_id & 0x000000ff;
	if (!_ctl_diag_capability(ioc, buffer_type)) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have capability for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -EPERM;
	}

	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) is not registered\n",
			ioc->name, __func__, buffer_type);
		return -EINVAL;
	}

	if (karg.unique_id != ioc->unique_id[buffer_type]) {
		pr_err(MPT3SAS_FMT
			"%s: unique_id(0x%08x) is not registered\n",
			ioc->name, __func__, karg.unique_id);
		return -EINVAL;
	}

	if (ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_RELEASED) {
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) is already released\n",
			ioc->name, __func__,
		    buffer_type);
		return 0;
	}

	request_data = ioc->diag_buffer[buffer_type];

	if (!request_data) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -ENOMEM;
	}

	/* buffers were released by due to host reset */
	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_DIAG_RESET)) {
		ioc->diag_buffer_status[buffer_type] |=
		    MPT3_DIAG_BUFFER_IS_RELEASED;
		ioc->diag_buffer_status[buffer_type] &=
		    ~MPT3_DIAG_BUFFER_IS_DIAG_RESET;
		pr_err(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) was released due to host reset\n",
			ioc->name, __func__, buffer_type);
		return 0;
	}

	rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);

	if (issue_reset)
2005
		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

	return rc;
}

/**
 * _ctl_diag_read_buffer - request for copy of the diag buffer
 * @ioc: per adapter object
 * @arg - user space buffer containing ioctl content
 */
static long
_ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
	struct mpt3_diag_read_buffer karg;
	struct mpt3_diag_read_buffer __user *uarg = arg;
	void *request_data, *diag_data;
	Mpi2DiagBufferPostRequest_t *mpi_request;
	Mpi2DiagBufferPostReply_t *mpi_reply;
	int rc, i;
	u8 buffer_type;
2025
	unsigned long request_size, copy_size;
2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144
	u16 smid;
	u16 ioc_status;
	u8 issue_reset = 0;

	if (copy_from_user(&karg, arg, sizeof(karg))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
	    __func__));

	buffer_type = karg.unique_id & 0x000000ff;
	if (!_ctl_diag_capability(ioc, buffer_type)) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have capability for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -EPERM;
	}

	if (karg.unique_id != ioc->unique_id[buffer_type]) {
		pr_err(MPT3SAS_FMT
			"%s: unique_id(0x%08x) is not registered\n",
			ioc->name, __func__, karg.unique_id);
		return -EINVAL;
	}

	request_data = ioc->diag_buffer[buffer_type];
	if (!request_data) {
		pr_err(MPT3SAS_FMT
			"%s: doesn't have buffer for buffer_type(0x%02x)\n",
			ioc->name, __func__, buffer_type);
		return -ENOMEM;
	}

	request_size = ioc->diag_buffer_sz[buffer_type];

	if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
		pr_err(MPT3SAS_FMT "%s: either the starting_offset " \
		    "or bytes_to_read are not 4 byte aligned\n", ioc->name,
		    __func__);
		return -EINVAL;
	}

	if (karg.starting_offset > request_size)
		return -EINVAL;

	diag_data = (void *)(request_data + karg.starting_offset);
	dctlprintk(ioc, pr_info(MPT3SAS_FMT
		"%s: diag_buffer(%p), offset(%d), sz(%d)\n",
		ioc->name, __func__,
	    diag_data, karg.starting_offset, karg.bytes_to_read));

	/* Truncate data on requests that are too large */
	if ((diag_data + karg.bytes_to_read < diag_data) ||
	    (diag_data + karg.bytes_to_read > request_data + request_size))
		copy_size = request_size - karg.starting_offset;
	else
		copy_size = karg.bytes_to_read;

	if (copy_to_user((void __user *)uarg->diagnostic_data,
	    diag_data, copy_size)) {
		pr_err(MPT3SAS_FMT
			"%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
			ioc->name, __func__, diag_data);
		return -EFAULT;
	}

	if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
		return 0;

	dctlprintk(ioc, pr_info(MPT3SAS_FMT
		"%s: Reregister buffer_type(0x%02x)\n",
		ioc->name, __func__, buffer_type));
	if ((ioc->diag_buffer_status[buffer_type] &
	    MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
		dctlprintk(ioc, pr_info(MPT3SAS_FMT
			"%s: buffer_type(0x%02x) is still registered\n",
			ioc->name, __func__, buffer_type));
		return 0;
	}
	/* Get a free request frame and save the message context.
	*/

	if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
		pr_err(MPT3SAS_FMT "%s: ctl_cmd in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
	if (!smid) {
		pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	rc = 0;
	ioc->ctl_cmds.status = MPT3_CMD_PENDING;
	memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
	mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
	ioc->ctl_cmds.smid = smid;

	mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
	mpi_request->BufferType = buffer_type;
	mpi_request->BufferLength =
	    cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
	mpi_request->BufferAddress =
	    cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
	for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
		mpi_request->ProductSpecific[i] =
			cpu_to_le32(ioc->product_specific[buffer_type][i]);
	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;

	init_completion(&ioc->ctl_cmds.done);
2145
	ioc->put_smid_default(ioc, smid);
2146
	wait_for_completion_timeout(&ioc->ctl_cmds.done,
2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184
	    MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);

	if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
		pr_err(MPT3SAS_FMT "%s: timeout\n", ioc->name,
		    __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2DiagBufferPostRequest_t)/4);
		if (!(ioc->ctl_cmds.status & MPT3_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

	/* process the completed Reply Message Frame */
	if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
		pr_err(MPT3SAS_FMT "%s: no reply message\n",
		    ioc->name, __func__);
		rc = -EFAULT;
		goto out;
	}

	mpi_reply = ioc->ctl_cmds.reply;
	ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;

	if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
		ioc->diag_buffer_status[buffer_type] |=
		    MPT3_DIAG_BUFFER_IS_REGISTERED;
		dctlprintk(ioc, pr_info(MPT3SAS_FMT "%s: success\n",
		    ioc->name, __func__));
	} else {
		pr_info(MPT3SAS_FMT
			"%s: ioc_status(0x%04x) log_info(0x%08x)\n",
			ioc->name, __func__,
		    ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
		rc = -EFAULT;
	}

 issue_host_reset:
	if (issue_reset)
2185
		mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244

 out:

	ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
	return rc;
}



#ifdef CONFIG_COMPAT
/**
 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
 * @ioc: per adapter object
 * @cmd - ioctl opcode
 * @arg - (struct mpt3_ioctl_command32)
 *
 * MPT3COMMAND32 - Handle 32bit applications running on 64bit os.
 */
static long
_ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd,
	void __user *arg)
{
	struct mpt3_ioctl_command32 karg32;
	struct mpt3_ioctl_command32 __user *uarg;
	struct mpt3_ioctl_command karg;

	if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32))
		return -EINVAL;

	uarg = (struct mpt3_ioctl_command32 __user *) arg;

	if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

	memset(&karg, 0, sizeof(struct mpt3_ioctl_command));
	karg.hdr.ioc_number = karg32.hdr.ioc_number;
	karg.hdr.port_number = karg32.hdr.port_number;
	karg.hdr.max_data_size = karg32.hdr.max_data_size;
	karg.timeout = karg32.timeout;
	karg.max_reply_bytes = karg32.max_reply_bytes;
	karg.data_in_size = karg32.data_in_size;
	karg.data_out_size = karg32.data_out_size;
	karg.max_sense_bytes = karg32.max_sense_bytes;
	karg.data_sge_offset = karg32.data_sge_offset;
	karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
	karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
	karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
	karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
	return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
}
#endif

/**
 * _ctl_ioctl_main - main ioctl entry point
 * @file - (struct file)
 * @cmd - ioctl opcode
2245 2246 2247
 * @arg - user space data buffer
 * @compat - handles 32 bit applications in 64bit os
 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
2248
 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
2249 2250 2251
 */
static long
_ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2252
	u8 compat, u16 mpi_version)
2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266
{
	struct MPT3SAS_ADAPTER *ioc;
	struct mpt3_ioctl_header ioctl_header;
	enum block_state state;
	long ret = -EINVAL;

	/* get IOCTL header */
	if (copy_from_user(&ioctl_header, (char __user *)arg,
	    sizeof(struct mpt3_ioctl_header))) {
		pr_err("failure at %s:%d/%s()!\n",
		    __FILE__, __LINE__, __func__);
		return -EFAULT;
	}

2267 2268
	if (_ctl_verify_adapter(ioctl_header.ioc_number,
				&ioc, mpi_version) == -1 || !ioc)
2269 2270
		return -ENODEV;

2271 2272 2273
	/* pci_access_mutex lock acquired by ioctl path */
	mutex_lock(&ioc->pci_access_mutex);

2274
	if (ioc->shost_recovery || ioc->pci_error_recovery ||
2275 2276 2277 2278
	    ioc->is_driver_loading || ioc->remove_host) {
		ret = -EAGAIN;
		goto out_unlock_pciaccess;
	}
2279 2280 2281

	state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
	if (state == NON_BLOCKING) {
2282 2283 2284 2285 2286 2287 2288 2289
		if (!mutex_trylock(&ioc->ctl_cmds.mutex)) {
			ret = -EAGAIN;
			goto out_unlock_pciaccess;
		}
	} else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
		ret = -ERESTARTSYS;
		goto out_unlock_pciaccess;
	}
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369


	switch (cmd) {
	case MPT3IOCINFO:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo))
			ret = _ctl_getiocinfo(ioc, arg);
		break;
#ifdef CONFIG_COMPAT
	case MPT3COMMAND32:
#endif
	case MPT3COMMAND:
	{
		struct mpt3_ioctl_command __user *uarg;
		struct mpt3_ioctl_command karg;

#ifdef CONFIG_COMPAT
		if (compat) {
			ret = _ctl_compat_mpt_command(ioc, cmd, arg);
			break;
		}
#endif
		if (copy_from_user(&karg, arg, sizeof(karg))) {
			pr_err("failure at %s:%d/%s()!\n",
			    __FILE__, __LINE__, __func__);
			ret = -EFAULT;
			break;
		}

		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) {
			uarg = arg;
			ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
		}
		break;
	}
	case MPT3EVENTQUERY:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery))
			ret = _ctl_eventquery(ioc, arg);
		break;
	case MPT3EVENTENABLE:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable))
			ret = _ctl_eventenable(ioc, arg);
		break;
	case MPT3EVENTREPORT:
		ret = _ctl_eventreport(ioc, arg);
		break;
	case MPT3HARDRESET:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset))
			ret = _ctl_do_reset(ioc, arg);
		break;
	case MPT3BTDHMAPPING:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping))
			ret = _ctl_btdh_mapping(ioc, arg);
		break;
	case MPT3DIAGREGISTER:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register))
			ret = _ctl_diag_register(ioc, arg);
		break;
	case MPT3DIAGUNREGISTER:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister))
			ret = _ctl_diag_unregister(ioc, arg);
		break;
	case MPT3DIAGQUERY:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query))
			ret = _ctl_diag_query(ioc, arg);
		break;
	case MPT3DIAGRELEASE:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release))
			ret = _ctl_diag_release(ioc, arg);
		break;
	case MPT3DIAGREADBUFFER:
		if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer))
			ret = _ctl_diag_read_buffer(ioc, arg);
		break;
	default:
		dctlprintk(ioc, pr_info(MPT3SAS_FMT
		    "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
		break;
	}

	mutex_unlock(&ioc->ctl_cmds.mutex);
2370 2371
out_unlock_pciaccess:
	mutex_unlock(&ioc->pci_access_mutex);
2372 2373 2374 2375
	return ret;
}

/**
2376
 * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
2377 2378 2379 2380
 * @file - (struct file)
 * @cmd - ioctl opcode
 * @arg -
 */
2381
static long
2382
_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2383 2384 2385
{
	long ret;

2386 2387
	/* pass MPI25_VERSION | MPI26_VERSION value,
	 * to indicate that this ioctl cmd
2388 2389
	 * came from mpt3ctl ioctl device.
	 */
2390 2391
	ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
		MPI25_VERSION | MPI26_VERSION);
2392 2393 2394
	return ret;
}

2395 2396 2397 2398 2399 2400
/**
 * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
 * @file - (struct file)
 * @cmd - ioctl opcode
 * @arg -
 */
2401
static long
2402 2403 2404 2405 2406 2407 2408 2409 2410 2411
_ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	long ret;

	/* pass MPI2_VERSION value, to indicate that this ioctl cmd
	 * came from mpt2ctl ioctl device.
	 */
	ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION);
	return ret;
}
2412 2413
#ifdef CONFIG_COMPAT
/**
2414
 *_ ctl_ioctl_compat - main ioctl entry point (compat)
2415 2416 2417 2418 2419 2420
 * @file -
 * @cmd -
 * @arg -
 *
 * This routine handles 32 bit applications in 64bit os.
 */