ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/marvell/linux/drivers/scsi/mpt3sas/mpt3sas_ctl.c
new file mode 100644
index 0000000..1c5c172
--- /dev/null
+++ b/marvell/linux/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -0,0 +1,3734 @@
+/*
+ * Management Module Support for MPT (Message Passing Technology) based
+ * controllers
+ *
+ * This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.c
+ * Copyright (C) 2012-2014 LSI Corporation
+ * Copyright (C) 2013-2014 Avago Technologies
+ * (mailto: MPT-FusionLinux.pdl@avagotech.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * NO WARRANTY
+ * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
+ * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
+ * solely responsible for determining the appropriateness of using and
+ * distributing the Program and assumes all risks associated with its
+ * exercise of rights under this Agreement, including but not limited to
+ * the risks and costs of program errors, damage to or loss of data,
+ * programs or equipment, and unavailability or interruption of operations.
+
+ * DISCLAIMER OF LIABILITY
+ * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
+ * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA.
+ */
+
+#include <linux/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_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;
+
+ ioc_info(ioc, "%s: %s, smid(%d)\n", calling_function_name, desc, smid);
+
+ if (!mpi_reply)
+ return;
+
+ if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
+ ioc_info(ioc, "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
+ 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;
+ struct _pcie_device *pcie_device = NULL;
+
+ sas_device = mpt3sas_get_sdev_by_handle(ioc,
+ le16_to_cpu(scsi_reply->DevHandle));
+ if (sas_device) {
+ ioc_warn(ioc, "\tsas_address(0x%016llx), phy(%d)\n",
+ (u64)sas_device->sas_address,
+ sas_device->phy);
+ ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
+ (u64)sas_device->enclosure_logical_id,
+ sas_device->slot);
+ sas_device_put(sas_device);
+ }
+ if (!sas_device) {
+ pcie_device = mpt3sas_get_pdev_by_handle(ioc,
+ le16_to_cpu(scsi_reply->DevHandle));
+ if (pcie_device) {
+ ioc_warn(ioc, "\tWWID(0x%016llx), port(%d)\n",
+ (unsigned long long)pcie_device->wwid,
+ pcie_device->port_num);
+ if (pcie_device->enclosure_handle != 0)
+ ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
+ (u64)pcie_device->enclosure_logical_id,
+ pcie_device->slot);
+ pcie_device_put(pcie_device);
+ }
+ }
+ if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
+ ioc_info(ioc, "\tscsi_state(0x%02x), scsi_status(0x%02x)\n",
+ 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;
+ Mpi26NVMeEncapsulatedErrorReply_t *nvme_error_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);
+ }
+ }
+ /*
+ * Get Error Response data for NVMe device. The ctl_cmds.sense
+ * buffer is used to store the Error Response data.
+ */
+ if (mpi_reply->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
+ nvme_error_reply =
+ (Mpi26NVMeEncapsulatedErrorReply_t *)mpi_reply;
+ sz = min_t(u32, NVME_ERROR_RESPONSE_SIZE,
+ le16_to_cpu(nvme_error_reply->ErrorResponseCount));
+ 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.
+ *
+ * Return: 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
+ */
+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);
+ if (mpi_reply)
+ mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
+ return 1;
+}
+
+/**
+ * _ctl_verify_adapter - validates ioc_number passed from application
+ * @ioc_number: ?
+ * @iocpp: The ioc pointer is returned in this.
+ * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
+ * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
+ *
+ * Return: (-1) means error, else ioc_number.
+ */
+static int
+_ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
+ int mpi_version)
+{
+ struct MPT3SAS_ADAPTER *ioc;
+ int version = 0;
+ /* global ioc lock to protect controller on list operations */
+ spin_lock(&gioc_lock);
+ list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
+ if (ioc->id != ioc_number)
+ continue;
+ /* Check whether this ioctl command is from right
+ * ioctl device or not, if not continue the search.
+ */
+ 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:
+ spin_unlock(&gioc_lock);
+ *iocpp = ioc;
+ return ioc_number;
+ }
+ spin_unlock(&gioc_lock);
+ *iocpp = NULL;
+ return -1;
+}
+
+/**
+ * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
+ * @ioc: per adapter object
+ *
+ * The handler for doing any required cleanup or initialization.
+ */
+void mpt3sas_ctl_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc)
+{
+ int i;
+ u8 issue_reset;
+
+ dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_PRE_RESET\n", __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);
+ }
+}
+
+/**
+ * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
+ * @ioc: per adapter object
+ *
+ * The handler for doing any required cleanup or initialization.
+ */
+void mpt3sas_ctl_after_reset_handler(struct MPT3SAS_ADAPTER *ioc)
+{
+ dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_AFTER_RESET\n", __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);
+ }
+}
+
+/**
+ * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
+ * @ioc: per adapter object
+ *
+ * The handler for doing any required cleanup or initialization.
+ */
+void mpt3sas_ctl_reset_done_handler(struct MPT3SAS_ADAPTER *ioc)
+{
+ int i;
+
+ dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_DONE_RESET\n", __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;
+ }
+}
+
+/**
+ * _ctl_fasync -
+ * @fd: ?
+ * @filep: ?
+ * @mode: ?
+ *
+ * Called when application request fasyn callback handler.
+ */
+static int
+_ctl_fasync(int fd, struct file *filep, int mode)
+{
+ return fasync_helper(fd, filep, mode, &async_queue);
+}
+
+/**
+ * _ctl_poll -
+ * @filep: ?
+ * @wait: ?
+ *
+ */
+static __poll_t
+_ctl_poll(struct file *filep, poll_table *wait)
+{
+ struct MPT3SAS_ADAPTER *ioc;
+
+ poll_wait(filep, &ctl_poll_wait, wait);
+
+ /* global ioc lock to protect controller on list operations */
+ spin_lock(&gioc_lock);
+ list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
+ if (ioc->aen_event_read_flag) {
+ spin_unlock(&gioc_lock);
+ return EPOLLIN | EPOLLRDNORM;
+ }
+ }
+ spin_unlock(&gioc_lock);
+ 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
+ *
+ * Return: 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 smid;
+ u16 handle;
+ struct scsi_cmnd *scmd;
+ struct MPT3SAS_DEVICE *priv_data;
+ 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);
+ for (smid = ioc->scsiio_depth; smid && !found; smid--) {
+ struct scsiio_tracker *st;
+
+ scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
+ if (!scmd)
+ 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;
+ st = scsi_cmd_priv(scmd);
+
+ /*
+ * If the given TaskMID from the user space is zero, then the
+ * first outstanding smid will be picked up. Otherwise,
+ * targeted smid will be the one.
+ */
+ if (!tm_request->TaskMID || tm_request->TaskMID == st->smid) {
+ tm_request->TaskMID = cpu_to_le16(st->smid);
+ found = 1;
+ }
+ }
+
+ if (!found) {
+ dctlprintk(ioc,
+ ioc_info(ioc, "%s: handle(0x%04x), lun(%d), no active mid!!\n",
+ 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,
+ ioc_info(ioc, "%s: handle(0x%04x), lun(%d), task_mid(%d)\n",
+ 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;
+ Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request = NULL;
+ struct _pcie_device *pcie_device = NULL;
+ u16 smid;
+ unsigned long timeout;
+ u8 issue_reset;
+ u32 sz, sz_arg;
+ 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 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
+
+ issue_reset = 0;
+
+ if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
+ ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
+ ret = -EAGAIN;
+ goto out;
+ }
+
+ ret = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
+ if (ret)
+ goto out;
+
+ mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
+ if (!mpi_request) {
+ ioc_err(ioc, "%s: failed obtaining a memory for mpi_request\n",
+ __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) {
+ ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
+ ret = -EAGAIN;
+ goto out;
+ }
+ } else {
+ /* Use first reserved smid for passthrough ioctls */
+ smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1;
+ }
+
+ 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);
+ memset(request, 0, ioc->request_sz);
+ 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 ||
+ mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
+ mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
+ mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH ||
+ mpi_request->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
+
+ device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
+ if (!device_handle || (device_handle >
+ ioc->facts.MaxDevHandle)) {
+ ret = -EINVAL;
+ mpt3sas_base_free_smid(ioc, smid);
+ goto out;
+ }
+ }
+
+ /* obtain dma-able memory for data transfer */
+ if (data_out_sz) /* WRITE */ {
+ data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz,
+ &data_out_dma, GFP_KERNEL);
+ 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 = dma_alloc_coherent(&ioc->pdev->dev, data_in_sz,
+ &data_in_dma, GFP_KERNEL);
+ 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_NVME_ENCAPSULATED:
+ {
+ nvme_encap_request = (Mpi26NVMeEncapsulatedRequest_t *)request;
+ if (!ioc->pcie_sg_lookup) {
+ dtmprintk(ioc, ioc_info(ioc,
+ "HBA doesn't support NVMe. Rejecting NVMe Encapsulated request.\n"
+ ));
+
+ if (ioc->logging_level & MPT_DEBUG_TM)
+ _debug_dump_mf(nvme_encap_request,
+ ioc->request_sz/4);
+ mpt3sas_base_free_smid(ioc, smid);
+ ret = -EINVAL;
+ goto out;
+ }
+ /*
+ * Get the Physical Address of the sense buffer.
+ * Use Error Response buffer address field to hold the sense
+ * buffer address.
+ * Clear the internal sense buffer, which will potentially hold
+ * the Completion Queue Entry on return, or 0 if no Entry.
+ * Build the PRPs and set direction bits.
+ * Send the request.
+ */
+ nvme_encap_request->ErrorResponseBaseAddress =
+ cpu_to_le64(ioc->sense_dma & 0xFFFFFFFF00000000UL);
+ nvme_encap_request->ErrorResponseBaseAddress |=
+ cpu_to_le64(le32_to_cpu(
+ mpt3sas_base_get_sense_buffer_dma(ioc, smid)));
+ nvme_encap_request->ErrorResponseAllocationLength =
+ cpu_to_le16(NVME_ERROR_RESPONSE_SIZE);
+ memset(ioc->ctl_cmds.sense, 0, NVME_ERROR_RESPONSE_SIZE);
+ ioc->build_nvme_prp(ioc, smid, nvme_encap_request,
+ data_out_dma, data_out_sz, data_in_dma, data_in_sz);
+ if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+ dtmprintk(ioc,
+ ioc_info(ioc, "handle(0x%04x): ioctl failed due to device removal in progress\n",
+ device_handle));
+ mpt3sas_base_free_smid(ioc, smid);
+ ret = -EINVAL;
+ goto out;
+ }
+ mpt3sas_base_put_smid_nvme_encap(ioc, smid);
+ break;
+ }
+ 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);
+ if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+ dtmprintk(ioc,
+ ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+ 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);
+ if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
+ ioc->put_smid_scsi_io(ioc, smid, device_handle);
+ else
+ ioc->put_smid_default(ioc, smid);
+ break;
+ }
+ case MPI2_FUNCTION_SCSI_TASK_MGMT:
+ {
+ Mpi2SCSITaskManagementRequest_t *tm_request =
+ (Mpi2SCSITaskManagementRequest_t *)request;
+
+ dtmprintk(ioc,
+ ioc_info(ioc, "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
+ le16_to_cpu(tm_request->DevHandle),
+ tm_request->TaskType));
+ ioc->got_task_abort_from_ioctl = 1;
+ 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);
+ ioc->got_task_abort_from_ioctl = 0;
+ goto out;
+ }
+ }
+ ioc->got_task_abort_from_ioctl = 0;
+
+ if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+ dtmprintk(ioc,
+ ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+ device_handle));
+ mpt3sas_base_free_smid(ioc, smid);
+ ret = -EINVAL;
+ goto out;
+ }
+ 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);
+ ioc->put_smid_hi_priority(ioc, smid, 0);
+ 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);
+ ioc->put_smid_default(ioc, smid);
+ break;
+ }
+ case MPI2_FUNCTION_SATA_PASSTHROUGH:
+ {
+ if (test_bit(device_handle, ioc->device_remove_in_progress)) {
+ dtmprintk(ioc,
+ ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
+ 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);
+ ioc->put_smid_default(ioc, smid);
+ break;
+ }
+ 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);
+ ioc->put_smid_default(ioc, smid);
+ break;
+ }
+ case MPI2_FUNCTION_TOOLBOX:
+ {
+ Mpi2ToolboxCleanRequest_t *toolbox_request =
+ (Mpi2ToolboxCleanRequest_t *)mpi_request;
+
+ if ((toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL)
+ || (toolbox_request->Tool ==
+ MPI26_TOOLBOX_BACKEND_PCIE_LANE_MARGIN))
+ ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
+ data_in_dma, data_in_sz);
+ else if (toolbox_request->Tool ==
+ MPI2_TOOLBOX_MEMORY_MOVE_TOOL) {
+ Mpi2ToolboxMemMoveRequest_t *mem_move_request =
+ (Mpi2ToolboxMemMoveRequest_t *)request;
+ Mpi2SGESimple64_t tmp, *src = NULL, *dst = NULL;
+
+ ioc->build_sg_mpi(ioc, psge, data_out_dma,
+ data_out_sz, data_in_dma, data_in_sz);
+ if (data_out_sz && !data_in_sz) {
+ dst =
+ (Mpi2SGESimple64_t *)&mem_move_request->SGL;
+ src = (void *)dst + ioc->sge_size;
+
+ memcpy(&tmp, src, ioc->sge_size);
+ memcpy(src, dst, ioc->sge_size);
+ memcpy(dst, &tmp, ioc->sge_size);
+ }
+ if (ioc->logging_level & MPT_DEBUG_TM) {
+ ioc_info(ioc,
+ "Mpi2ToolboxMemMoveRequest_t request msg\n");
+ _debug_dump_mf(mem_move_request,
+ ioc->request_sz/4);
+ }
+ } else
+ ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
+ data_in_dma, data_in_sz);
+ ioc->put_smid_default(ioc, smid);
+ 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 */
+ }
+ /* fall through */
+ default:
+ ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
+ data_in_dma, data_in_sz);
+ ioc->put_smid_default(ioc, smid);
+ break;
+ }
+
+ if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
+ timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
+ else
+ timeout = karg.timeout;
+ wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
+ 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)) {
+ issue_reset =
+ mpt3sas_base_check_cmd_timeout(ioc,
+ ioc->ctl_cmds.status, mpi_request,
+ karg.data_sge_offset);
+ 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;
+
+ ioc_info(ioc, "TASK_MGMT: IOCStatus(0x%04x), IOCLogInfo(0x%08x), TerminationCount(0x%08x)\n",
+ le16_to_cpu(tm_reply->IOCStatus),
+ le32_to_cpu(tm_reply->IOCLogInfo),
+ le32_to_cpu(tm_reply->TerminationCount));
+ }
+
+ /* 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/NVMe Error Response to user */
+ if (karg.max_sense_bytes && (mpi_request->Function ==
+ MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
+ MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || mpi_request->Function ==
+ MPI2_FUNCTION_NVME_ENCAPSULATED)) {
+ if (karg.sense_data_ptr == NULL) {
+ ioc_info(ioc, "Response buffer provided by application is NULL; Response data will not be returned\n");
+ goto out;
+ }
+ sz_arg = (mpi_request->Function ==
+ MPI2_FUNCTION_NVME_ENCAPSULATED) ? NVME_ERROR_RESPONSE_SIZE :
+ SCSI_SENSE_BUFFERSIZE;
+ sz = min_t(u32, karg.max_sense_bytes, sz_arg);
+ 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)) {
+ ioc_info(ioc, "issue target reset: handle = (0x%04x)\n",
+ le16_to_cpu(mpi_request->FunctionDependent1));
+ mpt3sas_halt_firmware(ioc);
+ pcie_device = mpt3sas_get_pdev_by_handle(ioc,
+ le16_to_cpu(mpi_request->FunctionDependent1));
+ if (pcie_device && (!ioc->tm_custom_handling) &&
+ (!(mpt3sas_scsih_is_pcie_scsi_device(
+ pcie_device->device_info))))
+ mpt3sas_scsih_issue_locked_tm(ioc,
+ le16_to_cpu(mpi_request->FunctionDependent1),
+ 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
+ 0, pcie_device->reset_timeout,
+ MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE);
+ else
+ mpt3sas_scsih_issue_locked_tm(ioc,
+ le16_to_cpu(mpi_request->FunctionDependent1),
+ 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
+ 0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET);
+ } else
+ mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
+ }
+
+ out:
+ if (pcie_device)
+ pcie_device_put(pcie_device);
+
+ /* free memory associated with sg buffers */
+ if (data_in)
+ dma_free_coherent(&ioc->pdev->dev, data_in_sz, data_in,
+ data_in_dma);
+
+ if (data_out)
+ dma_free_coherent(&ioc->pdev->dev, 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;
+
+ dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
+ __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;
+ strcpy(karg.driver_version, ioc->driver_name);
+ strcat(karg.driver_version, "-");
+ switch (ioc->hba_mpi_version_belonged) {
+ case MPI2_VERSION:
+ if (ioc->is_warpdrive)
+ karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
+ else
+ karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
+ strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
+ break;
+ case MPI25_VERSION:
+ case MPI26_VERSION:
+ if (ioc->is_gen35_ioc)
+ karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35;
+ else
+ karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
+ strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
+ break;
+ }
+ 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, ioc_info(ioc, "%s: enter\n",
+ __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, ioc_info(ioc, "%s: enter\n",
+ __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, ioc_info(ioc, "%s: enter\n",
+ __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, ioc_info(ioc, "%s: enter\n",
+ __func__));
+
+ retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
+ ioc_info(ioc, "host reset: %s\n", ((!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_pcie_device - searching for pcie device
+ * @ioc: per adapter object
+ * @btdh: btdh ioctl payload
+ */
+static int
+_ctl_btdh_search_pcie_device(struct MPT3SAS_ADAPTER *ioc,
+ struct mpt3_ioctl_btdh_mapping *btdh)
+{
+ struct _pcie_device *pcie_device;
+ unsigned long flags;
+ int rc = 0;
+
+ if (list_empty(&ioc->pcie_device_list))
+ return rc;
+
+ spin_lock_irqsave(&ioc->pcie_device_lock, flags);
+ list_for_each_entry(pcie_device, &ioc->pcie_device_list, list) {
+ if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
+ btdh->handle == pcie_device->handle) {
+ btdh->bus = pcie_device->channel;
+ btdh->id = pcie_device->id;
+ rc = 1;
+ goto out;
+ } else if (btdh->bus == pcie_device->channel && btdh->id ==
+ pcie_device->id && btdh->handle == 0xFFFF) {
+ btdh->handle = pcie_device->handle;
+ rc = 1;
+ goto out;
+ }
+ }
+ out:
+ spin_unlock_irqrestore(&ioc->pcie_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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ rc = _ctl_btdh_search_sas_device(ioc, &karg);
+ if (!rc)
+ rc = _ctl_btdh_search_pcie_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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
+ if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
+ ioc_err(ioc, "%s: failed due to ioc not operational\n",
+ __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
+ ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ buffer_type = diag_register->buffer_type;
+ if (!_ctl_diag_capability(ioc, buffer_type)) {
+ ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EPERM;
+ }
+
+ if (ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) {
+ ioc_err(ioc, "%s: already has a registered buffer for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EINVAL;
+ }
+
+ if (diag_register->requested_buffer_size % 4) {
+ ioc_err(ioc, "%s: the requested_buffer_size is not 4 byte aligned\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
+ if (!smid) {
+ ioc_err(ioc, "%s: failed obtaining a smid\n", __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]) {
+ dma_free_coherent(&ioc->pdev->dev,
+ 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 = dma_alloc_coherent(&ioc->pdev->dev,
+ request_data_sz, &request_data_dma, GFP_KERNEL);
+ if (request_data == NULL) {
+ ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n",
+ __func__, request_data_sz);
+ mpt3sas_base_free_smid(ioc, smid);
+ rc = -ENOMEM;
+ goto out;
+ }
+ 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,
+ ioc_info(ioc, "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
+ __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);
+ ioc->put_smid_default(ioc, smid);
+ wait_for_completion_timeout(&ioc->ctl_cmds.done,
+ MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
+
+ if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
+ issue_reset =
+ mpt3sas_base_check_cmd_timeout(ioc,
+ ioc->ctl_cmds.status, mpi_request,
+ sizeof(Mpi2DiagBufferPostRequest_t)/4);
+ goto issue_host_reset;
+ }
+
+ /* process the completed Reply Message Frame */
+ if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
+ ioc_err(ioc, "%s: no reply message\n", __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, ioc_info(ioc, "%s: success\n", __func__));
+ } else {
+ ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
+ __func__,
+ ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
+ rc = -EFAULT;
+ }
+
+ issue_host_reset:
+ if (issue_reset)
+ mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
+
+ out:
+
+ if (rc && request_data)
+ dma_free_coherent(&ioc->pdev->dev, 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) {
+ ioc_info(ioc, "registering trace buffer support\n");
+ 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) {
+ ioc_info(ioc, "registering snapshot buffer support\n");
+ 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) {
+ ioc_info(ioc, "registering extended buffer support\n");
+ 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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ buffer_type = karg.unique_id & 0x000000ff;
+ if (!_ctl_diag_capability(ioc, buffer_type)) {
+ ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EPERM;
+ }
+
+ if ((ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
+ ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
+ __func__, buffer_type);
+ return -EINVAL;
+ }
+ if ((ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
+ ioc_err(ioc, "%s: buffer_type(0x%02x) has not been released\n",
+ __func__, buffer_type);
+ return -EINVAL;
+ }
+
+ if (karg.unique_id != ioc->unique_id[buffer_type]) {
+ ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
+ __func__, karg.unique_id);
+ return -EINVAL;
+ }
+
+ request_data = ioc->diag_buffer[buffer_type];
+ if (!request_data) {
+ ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -ENOMEM;
+ }
+
+ request_data_sz = ioc->diag_buffer_sz[buffer_type];
+ request_data_dma = ioc->diag_buffer_dma[buffer_type];
+ dma_free_coherent(&ioc->pdev->dev, 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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ karg.application_flags = 0;
+ buffer_type = karg.buffer_type;
+
+ if (!_ctl_diag_capability(ioc, buffer_type)) {
+ ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EPERM;
+ }
+
+ if ((ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
+ ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
+ __func__, buffer_type);
+ return -EINVAL;
+ }
+
+ if (karg.unique_id & 0xffffff00) {
+ if (karg.unique_id != ioc->unique_id[buffer_type]) {
+ ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
+ __func__, karg.unique_id);
+ return -EINVAL;
+ }
+ }
+
+ request_data = ioc->diag_buffer[buffer_type];
+ if (!request_data) {
+ ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
+ __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))) {
+ ioc_err(ioc, "%s: unable to write mpt3_diag_query data @ %p\n",
+ __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, ioc_info(ioc, "%s\n",
+ __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,
+ ioc_info(ioc, "%s: skipping due to FAULT state\n",
+ __func__));
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
+ ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
+ if (!smid) {
+ ioc_err(ioc, "%s: failed obtaining a smid\n", __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);
+ ioc->put_smid_default(ioc, smid);
+ wait_for_completion_timeout(&ioc->ctl_cmds.done,
+ MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
+
+ if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
+ *issue_reset = mpt3sas_base_check_cmd_timeout(ioc,
+ ioc->ctl_cmds.status, mpi_request,
+ sizeof(Mpi2DiagReleaseRequest_t)/4);
+ rc = -EFAULT;
+ goto out;
+ }
+
+ /* process the completed Reply Message Frame */
+ if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
+ ioc_err(ioc, "%s: no reply message\n", __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, ioc_info(ioc, "%s: success\n", __func__));
+ } else {
+ ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
+ __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
+ * @ioc: ?
+ * @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
+ * overwriting 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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ buffer_type = karg.unique_id & 0x000000ff;
+ if (!_ctl_diag_capability(ioc, buffer_type)) {
+ ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EPERM;
+ }
+
+ if ((ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
+ ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
+ __func__, buffer_type);
+ return -EINVAL;
+ }
+
+ if (karg.unique_id != ioc->unique_id[buffer_type]) {
+ ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
+ __func__, karg.unique_id);
+ return -EINVAL;
+ }
+
+ if (ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_RELEASED) {
+ ioc_err(ioc, "%s: buffer_type(0x%02x) is already released\n",
+ __func__, buffer_type);
+ return 0;
+ }
+
+ request_data = ioc->diag_buffer[buffer_type];
+
+ if (!request_data) {
+ ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
+ __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;
+ ioc_err(ioc, "%s: buffer_type(0x%02x) was released due to host reset\n",
+ __func__, buffer_type);
+ return 0;
+ }
+
+ rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);
+
+ if (issue_reset)
+ mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
+
+ 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;
+ unsigned long request_size, copy_size;
+ 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, ioc_info(ioc, "%s\n",
+ __func__));
+
+ buffer_type = karg.unique_id & 0x000000ff;
+ if (!_ctl_diag_capability(ioc, buffer_type)) {
+ ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -EPERM;
+ }
+
+ if (karg.unique_id != ioc->unique_id[buffer_type]) {
+ ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
+ __func__, karg.unique_id);
+ return -EINVAL;
+ }
+
+ request_data = ioc->diag_buffer[buffer_type];
+ if (!request_data) {
+ ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
+ __func__, buffer_type);
+ return -ENOMEM;
+ }
+
+ request_size = ioc->diag_buffer_sz[buffer_type];
+
+ if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
+ ioc_err(ioc, "%s: either the starting_offset or bytes_to_read are not 4 byte aligned\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (karg.starting_offset > request_size)
+ return -EINVAL;
+
+ diag_data = (void *)(request_data + karg.starting_offset);
+ dctlprintk(ioc,
+ ioc_info(ioc, "%s: diag_buffer(%p), offset(%d), sz(%d)\n",
+ __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)) {
+ ioc_err(ioc, "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
+ __func__, diag_data);
+ return -EFAULT;
+ }
+
+ if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
+ return 0;
+
+ dctlprintk(ioc,
+ ioc_info(ioc, "%s: Reregister buffer_type(0x%02x)\n",
+ __func__, buffer_type));
+ if ((ioc->diag_buffer_status[buffer_type] &
+ MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
+ dctlprintk(ioc,
+ ioc_info(ioc, "%s: buffer_type(0x%02x) is still registered\n",
+ __func__, buffer_type));
+ return 0;
+ }
+ /* Get a free request frame and save the message context.
+ */
+
+ if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
+ ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
+ if (!smid) {
+ ioc_err(ioc, "%s: failed obtaining a smid\n", __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);
+ ioc->put_smid_default(ioc, smid);
+ wait_for_completion_timeout(&ioc->ctl_cmds.done,
+ MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
+
+ if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
+ issue_reset =
+ mpt3sas_base_check_cmd_timeout(ioc,
+ ioc->ctl_cmds.status, mpi_request,
+ sizeof(Mpi2DiagBufferPostRequest_t)/4);
+ goto issue_host_reset;
+ }
+
+ /* process the completed Reply Message Frame */
+ if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
+ ioc_err(ioc, "%s: no reply message\n", __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, ioc_info(ioc, "%s: success\n", __func__));
+ } else {
+ ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
+ __func__, ioc_status,
+ le32_to_cpu(mpi_reply->IOCLogInfo));
+ rc = -EFAULT;
+ }
+
+ issue_host_reset:
+ if (issue_reset)
+ mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
+
+ 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
+ * @arg: user space data buffer
+ * @compat: handles 32 bit applications in 64bit os
+ * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
+ * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
+ */
+static long
+_ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
+ u8 compat, u16 mpi_version)
+{
+ 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;
+ }
+
+ if (_ctl_verify_adapter(ioctl_header.ioc_number,
+ &ioc, mpi_version) == -1 || !ioc)
+ return -ENODEV;
+
+ /* pci_access_mutex lock acquired by ioctl path */
+ mutex_lock(&ioc->pci_access_mutex);
+
+ if (ioc->shost_recovery || ioc->pci_error_recovery ||
+ ioc->is_driver_loading || ioc->remove_host) {
+ ret = -EAGAIN;
+ goto out_unlock_pciaccess;
+ }
+
+ state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
+ if (state == NON_BLOCKING) {
+ 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;
+ }
+
+
+ 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 (karg.hdr.ioc_number != ioctl_header.ioc_number) {
+ ret = -EINVAL;
+ 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,
+ ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n",
+ cmd));
+ break;
+ }
+
+ mutex_unlock(&ioc->ctl_cmds.mutex);
+out_unlock_pciaccess:
+ mutex_unlock(&ioc->pci_access_mutex);
+ return ret;
+}
+
+/**
+ * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
+ * @file: (struct file)
+ * @cmd: ioctl opcode
+ * @arg: ?
+ */
+static long
+_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ long ret;
+
+ /* pass MPI25_VERSION | MPI26_VERSION value,
+ * to indicate that this ioctl cmd
+ * came from mpt3ctl ioctl device.
+ */
+ ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
+ MPI25_VERSION | MPI26_VERSION);
+ return ret;
+}
+
+/**
+ * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
+ * @file: (struct file)
+ * @cmd: ioctl opcode
+ * @arg: ?
+ */
+static long
+_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;
+}
+#ifdef CONFIG_COMPAT
+/**
+ *_ ctl_ioctl_compat - main ioctl entry point (compat)
+ * @file: ?
+ * @cmd: ?
+ * @arg: ?
+ *
+ * This routine handles 32 bit applications in 64bit os.
+ */
+static long
+_ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
+{
+ long ret;
+
+ ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1,
+ MPI25_VERSION | MPI26_VERSION);
+ return ret;
+}
+
+/**
+ *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat)
+ * @file: ?
+ * @cmd: ?
+ * @arg: ?
+ *
+ * This routine handles 32 bit applications in 64bit os.
+ */
+static long
+_ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
+{
+ long ret;
+
+ ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION);
+ return ret;
+}
+#endif
+
+/* scsi host attributes */
+/**
+ * version_fw_show - firmware version
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_fw_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
+ (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
+ (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
+ (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
+ ioc->facts.FWVersion.Word & 0x000000FF);
+}
+static DEVICE_ATTR_RO(version_fw);
+
+/**
+ * version_bios_show - bios version
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_bios_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
+
+ return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
+ (version & 0xFF000000) >> 24,
+ (version & 0x00FF0000) >> 16,
+ (version & 0x0000FF00) >> 8,
+ version & 0x000000FF);
+}
+static DEVICE_ATTR_RO(version_bios);
+
+/**
+ * version_mpi_show - MPI (message passing interface) version
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_mpi_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
+ ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
+}
+static DEVICE_ATTR_RO(version_mpi);
+
+/**
+ * version_product_show - product name
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_product_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
+}
+static DEVICE_ATTR_RO(version_product);
+
+/**
+ * version_nvdata_persistent_show - ndvata persistent version
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_nvdata_persistent_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%08xh\n",
+ le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
+}
+static DEVICE_ATTR_RO(version_nvdata_persistent);
+
+/**
+ * version_nvdata_default_show - nvdata default version
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+version_nvdata_default_show(struct device *cdev, struct device_attribute
+ *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%08xh\n",
+ le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
+}
+static DEVICE_ATTR_RO(version_nvdata_default);
+
+/**
+ * board_name_show - board name
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+board_name_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
+}
+static DEVICE_ATTR_RO(board_name);
+
+/**
+ * board_assembly_show - board assembly name
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+board_assembly_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
+}
+static DEVICE_ATTR_RO(board_assembly);
+
+/**
+ * board_tracer_show - board tracer number
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+board_tracer_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
+}
+static DEVICE_ATTR_RO(board_tracer);
+
+/**
+ * io_delay_show - io missing delay
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is for firmware implemention for deboucing device
+ * removal events.
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+io_delay_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
+}
+static DEVICE_ATTR_RO(io_delay);
+
+/**
+ * device_delay_show - device missing delay
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is for firmware implemention for deboucing device
+ * removal events.
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+device_delay_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
+}
+static DEVICE_ATTR_RO(device_delay);
+
+/**
+ * fw_queue_depth_show - global credits
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is firmware queue depth limit
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
+}
+static DEVICE_ATTR_RO(fw_queue_depth);
+
+/**
+ * sas_address_show - sas address
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is the controller sas address
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+host_sas_address_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
+ (unsigned long long)ioc->sas_hba.sas_address);
+}
+static DEVICE_ATTR_RO(host_sas_address);
+
+/**
+ * logging_level_show - logging level
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+logging_level_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
+}
+static ssize_t
+logging_level_store(struct device *cdev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ int val = 0;
+
+ if (sscanf(buf, "%x", &val) != 1)
+ return -EINVAL;
+
+ ioc->logging_level = val;
+ ioc_info(ioc, "logging_level=%08xh\n",
+ ioc->logging_level);
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(logging_level);
+
+/**
+ * fwfault_debug_show - show/store fwfault_debug
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * mpt3sas_fwfault_debug is command line option
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+fwfault_debug_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
+}
+static ssize_t
+fwfault_debug_store(struct device *cdev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ int val = 0;
+
+ if (sscanf(buf, "%d", &val) != 1)
+ return -EINVAL;
+
+ ioc->fwfault_debug = val;
+ ioc_info(ioc, "fwfault_debug=%d\n",
+ ioc->fwfault_debug);
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(fwfault_debug);
+
+/**
+ * ioc_reset_count_show - ioc reset count
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is firmware queue depth limit
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count);
+}
+static DEVICE_ATTR_RO(ioc_reset_count);
+
+/**
+ * reply_queue_count_show - number of reply queues
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is number of reply queues
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+reply_queue_count_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ u8 reply_queue_count;
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ if ((ioc->facts.IOCCapabilities &
+ MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
+ reply_queue_count = ioc->reply_queue_count;
+ else
+ reply_queue_count = 1;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
+}
+static DEVICE_ATTR_RO(reply_queue_count);
+
+/**
+ * BRM_status_show - Backup Rail Monitor Status
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is number of reply queues
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+BRM_status_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
+ Mpi2ConfigReply_t mpi_reply;
+ u16 backup_rail_monitor_status = 0;
+ u16 ioc_status;
+ int sz;
+ ssize_t rc = 0;
+
+ if (!ioc->is_warpdrive) {
+ ioc_err(ioc, "%s: BRM attribute is only for warpdrive\n",
+ __func__);
+ return 0;
+ }
+ /* pci_access_mutex lock acquired by sysfs show path */
+ mutex_lock(&ioc->pci_access_mutex);
+ if (ioc->pci_error_recovery || ioc->remove_host)
+ goto out;
+
+ /* allocate upto GPIOVal 36 entries */
+ sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
+ io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
+ if (!io_unit_pg3) {
+ rc = -ENOMEM;
+ ioc_err(ioc, "%s: failed allocating memory for iounit_pg3: (%d) bytes\n",
+ __func__, sz);
+ goto out;
+ }
+
+ if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
+ 0) {
+ ioc_err(ioc, "%s: failed reading iounit_pg3\n",
+ __func__);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
+ if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
+ ioc_err(ioc, "%s: iounit_pg3 failed with ioc_status(0x%04x)\n",
+ __func__, ioc_status);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ if (io_unit_pg3->GPIOCount < 25) {
+ ioc_err(ioc, "%s: iounit_pg3->GPIOCount less than 25 entries, detected (%d) entries\n",
+ __func__, io_unit_pg3->GPIOCount);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ /* BRM status is in bit zero of GPIOVal[24] */
+ backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
+ rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
+
+ out:
+ kfree(io_unit_pg3);
+ mutex_unlock(&ioc->pci_access_mutex);
+ return rc;
+}
+static DEVICE_ATTR_RO(BRM_status);
+
+struct DIAG_BUFFER_START {
+ __le32 Size;
+ __le32 DiagVersion;
+ u8 BufferType;
+ u8 Reserved[3];
+ __le32 Reserved1;
+ __le32 Reserved2;
+ __le32 Reserved3;
+};
+
+/**
+ * host_trace_buffer_size_show - host buffer size (trace only)
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+host_trace_buffer_size_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ u32 size = 0;
+ struct DIAG_BUFFER_START *request_data;
+
+ if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
+ ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
+ __func__);
+ return 0;
+ }
+
+ if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
+ ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
+ __func__);
+ return 0;
+ }
+
+ request_data = (struct DIAG_BUFFER_START *)
+ ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
+ if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
+ le32_to_cpu(request_data->DiagVersion) == 0x01000000 ||
+ le32_to_cpu(request_data->DiagVersion) == 0x01010000) &&
+ le32_to_cpu(request_data->Reserved3) == 0x4742444c)
+ size = le32_to_cpu(request_data->Size);
+
+ ioc->ring_buffer_sz = size;
+ return snprintf(buf, PAGE_SIZE, "%d\n", size);
+}
+static DEVICE_ATTR_RO(host_trace_buffer_size);
+
+/**
+ * host_trace_buffer_show - firmware ring buffer (trace only)
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ *
+ * You will only be able to read 4k bytes of ring buffer at a time.
+ * In order to read beyond 4k bytes, you will have to write out the
+ * offset to the same attribute, it will move the pointer.
+ */
+static ssize_t
+host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ void *request_data;
+ u32 size;
+
+ if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
+ ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
+ __func__);
+ return 0;
+ }
+
+ if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
+ ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
+ __func__);
+ return 0;
+ }
+
+ if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
+ return 0;
+
+ size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
+ size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
+ request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
+ memcpy(buf, request_data, size);
+ return size;
+}
+
+static ssize_t
+host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ int val = 0;
+
+ if (sscanf(buf, "%d", &val) != 1)
+ return -EINVAL;
+
+ ioc->ring_buffer_offset = val;
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(host_trace_buffer);
+
+
+/*****************************************/
+
+/**
+ * host_trace_buffer_enable_show - firmware ring buffer (trace only)
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ *
+ * This is a mechnism to post/release host_trace_buffers
+ */
+static ssize_t
+host_trace_buffer_enable_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
+ ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0))
+ return snprintf(buf, PAGE_SIZE, "off\n");
+ else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_RELEASED))
+ return snprintf(buf, PAGE_SIZE, "release\n");
+ else
+ return snprintf(buf, PAGE_SIZE, "post\n");
+}
+
+static ssize_t
+host_trace_buffer_enable_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ char str[10] = "";
+ struct mpt3_diag_register diag_register;
+ u8 issue_reset = 0;
+
+ /* don't allow post/release occurr while recovery is active */
+ if (ioc->shost_recovery || ioc->remove_host ||
+ ioc->pci_error_recovery || ioc->is_driver_loading)
+ return -EBUSY;
+
+ if (sscanf(buf, "%9s", str) != 1)
+ return -EINVAL;
+
+ if (!strcmp(str, "post")) {
+ /* exit out if host buffers are already posted */
+ if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
+ (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) == 0))
+ goto out;
+ memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
+ ioc_info(ioc, "posting host trace buffers\n");
+ diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
+ diag_register.requested_buffer_size = (1024 * 1024);
+ diag_register.unique_id = 0x7075900;
+ ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
+ _ctl_diag_register_2(ioc, &diag_register);
+ } else if (!strcmp(str, "release")) {
+ /* exit out if host buffers are already released */
+ if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
+ goto out;
+ if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)
+ goto out;
+ if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
+ MPT3_DIAG_BUFFER_IS_RELEASED))
+ goto out;
+ ioc_info(ioc, "releasing host trace buffer\n");
+ mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
+ &issue_reset);
+ }
+
+ out:
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(host_trace_buffer_enable);
+
+/*********** diagnostic trigger suppport *********************************/
+
+/**
+ * diag_trigger_master_show - show the diag_trigger_master attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_master_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t rc;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ rc = sizeof(struct SL_WH_MASTER_TRIGGER_T);
+ memcpy(buf, &ioc->diag_trigger_master, rc);
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return rc;
+}
+
+/**
+ * diag_trigger_master_store - store the diag_trigger_master attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ * @count: ?
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_master_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t rc;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
+ memset(&ioc->diag_trigger_master, 0,
+ sizeof(struct SL_WH_MASTER_TRIGGER_T));
+ memcpy(&ioc->diag_trigger_master, buf, rc);
+ ioc->diag_trigger_master.MasterData |=
+ (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return rc;
+}
+static DEVICE_ATTR_RW(diag_trigger_master);
+
+
+/**
+ * diag_trigger_event_show - show the diag_trigger_event attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_event_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t rc;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T);
+ memcpy(buf, &ioc->diag_trigger_event, rc);
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return rc;
+}
+
+/**
+ * diag_trigger_event_store - store the diag_trigger_event attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ * @count: ?
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_event_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t sz;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
+ memset(&ioc->diag_trigger_event, 0,
+ sizeof(struct SL_WH_EVENT_TRIGGERS_T));
+ memcpy(&ioc->diag_trigger_event, buf, sz);
+ if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES)
+ ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES;
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return sz;
+}
+static DEVICE_ATTR_RW(diag_trigger_event);
+
+
+/**
+ * diag_trigger_scsi_show - show the diag_trigger_scsi attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_scsi_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t rc;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T);
+ memcpy(buf, &ioc->diag_trigger_scsi, rc);
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return rc;
+}
+
+/**
+ * diag_trigger_scsi_store - store the diag_trigger_scsi attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ * @count: ?
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_scsi_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t sz;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ sz = min(sizeof(ioc->diag_trigger_scsi), count);
+ memset(&ioc->diag_trigger_scsi, 0, sizeof(ioc->diag_trigger_scsi));
+ memcpy(&ioc->diag_trigger_scsi, buf, sz);
+ if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES)
+ ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES;
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return sz;
+}
+static DEVICE_ATTR_RW(diag_trigger_scsi);
+
+
+/**
+ * diag_trigger_scsi_show - show the diag_trigger_mpi attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_mpi_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t rc;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ rc = sizeof(struct SL_WH_MPI_TRIGGERS_T);
+ memcpy(buf, &ioc->diag_trigger_mpi, rc);
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return rc;
+}
+
+/**
+ * diag_trigger_mpi_store - store the diag_trigger_mpi attribute
+ * @cdev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ * @count: ?
+ *
+ * A sysfs 'read/write' shost attribute.
+ */
+static ssize_t
+diag_trigger_mpi_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ unsigned long flags;
+ ssize_t sz;
+
+ spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
+ sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
+ memset(&ioc->diag_trigger_mpi, 0,
+ sizeof(ioc->diag_trigger_mpi));
+ memcpy(&ioc->diag_trigger_mpi, buf, sz);
+ if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES)
+ ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES;
+ spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
+ return sz;
+}
+
+static DEVICE_ATTR_RW(diag_trigger_mpi);
+
+/*********** diagnostic trigger suppport *** END ****************************/
+
+/*****************************************/
+
+/**
+ * drv_support_bitmap_show - driver supported feature bitmap
+ * @cdev - pointer to embedded class device
+ * @buf - the buffer returned
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+drv_support_bitmap_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "0x%08x\n", ioc->drv_support_bitmap);
+}
+static DEVICE_ATTR_RO(drv_support_bitmap);
+
+/**
+ * enable_sdev_max_qd_show - display whether sdev max qd is enabled/disabled
+ * @cdev - pointer to embedded class device
+ * @buf - the buffer returned
+ *
+ * A sysfs read/write shost attribute. This attribute is used to set the
+ * targets queue depth to HBA IO queue depth if this attribute is enabled.
+ */
+static ssize_t
+enable_sdev_max_qd_show(struct device *cdev,
+ struct device_attribute *attr, char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", ioc->enable_sdev_max_qd);
+}
+
+/**
+ * enable_sdev_max_qd_store - Enable/disable sdev max qd
+ * @cdev - pointer to embedded class device
+ * @buf - the buffer returned
+ *
+ * A sysfs read/write shost attribute. This attribute is used to set the
+ * targets queue depth to HBA IO queue depth if this attribute is enabled.
+ * If this attribute is disabled then targets will have corresponding default
+ * queue depth.
+ */
+static ssize_t
+enable_sdev_max_qd_store(struct device *cdev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(cdev);
+ struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
+ struct MPT3SAS_DEVICE *sas_device_priv_data;
+ struct MPT3SAS_TARGET *sas_target_priv_data;
+ int val = 0;
+ struct scsi_device *sdev;
+ struct _raid_device *raid_device;
+ int qdepth;
+
+ if (kstrtoint(buf, 0, &val) != 0)
+ return -EINVAL;
+
+ switch (val) {
+ case 0:
+ ioc->enable_sdev_max_qd = 0;
+ shost_for_each_device(sdev, ioc->shost) {
+ sas_device_priv_data = sdev->hostdata;
+ if (!sas_device_priv_data)
+ continue;
+ sas_target_priv_data = sas_device_priv_data->sas_target;
+ if (!sas_target_priv_data)
+ continue;
+
+ if (sas_target_priv_data->flags &
+ MPT_TARGET_FLAGS_VOLUME) {
+ raid_device =
+ mpt3sas_raid_device_find_by_handle(ioc,
+ sas_target_priv_data->handle);
+
+ switch (raid_device->volume_type) {
+ case MPI2_RAID_VOL_TYPE_RAID0:
+ if (raid_device->device_info &
+ MPI2_SAS_DEVICE_INFO_SSP_TARGET)
+ qdepth =
+ MPT3SAS_SAS_QUEUE_DEPTH;
+ else
+ qdepth =
+ MPT3SAS_SATA_QUEUE_DEPTH;
+ break;
+ case MPI2_RAID_VOL_TYPE_RAID1E:
+ case MPI2_RAID_VOL_TYPE_RAID1:
+ case MPI2_RAID_VOL_TYPE_RAID10:
+ case MPI2_RAID_VOL_TYPE_UNKNOWN:
+ default:
+ qdepth = MPT3SAS_RAID_QUEUE_DEPTH;
+ }
+ } else if (sas_target_priv_data->flags &
+ MPT_TARGET_FLAGS_PCIE_DEVICE)
+ qdepth = MPT3SAS_NVME_QUEUE_DEPTH;
+ else
+ qdepth = MPT3SAS_SAS_QUEUE_DEPTH;
+
+ mpt3sas_scsih_change_queue_depth(sdev, qdepth);
+ }
+ break;
+ case 1:
+ ioc->enable_sdev_max_qd = 1;
+ shost_for_each_device(sdev, ioc->shost)
+ mpt3sas_scsih_change_queue_depth(sdev,
+ shost->can_queue);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(enable_sdev_max_qd);
+
+struct device_attribute *mpt3sas_host_attrs[] = {
+ &dev_attr_version_fw,
+ &dev_attr_version_bios,
+ &dev_attr_version_mpi,
+ &dev_attr_version_product,
+ &dev_attr_version_nvdata_persistent,
+ &dev_attr_version_nvdata_default,
+ &dev_attr_board_name,
+ &dev_attr_board_assembly,
+ &dev_attr_board_tracer,
+ &dev_attr_io_delay,
+ &dev_attr_device_delay,
+ &dev_attr_logging_level,
+ &dev_attr_fwfault_debug,
+ &dev_attr_fw_queue_depth,
+ &dev_attr_host_sas_address,
+ &dev_attr_ioc_reset_count,
+ &dev_attr_host_trace_buffer_size,
+ &dev_attr_host_trace_buffer,
+ &dev_attr_host_trace_buffer_enable,
+ &dev_attr_reply_queue_count,
+ &dev_attr_diag_trigger_master,
+ &dev_attr_diag_trigger_event,
+ &dev_attr_diag_trigger_scsi,
+ &dev_attr_diag_trigger_mpi,
+ &dev_attr_drv_support_bitmap,
+ &dev_attr_BRM_status,
+ &dev_attr_enable_sdev_max_qd,
+ NULL,
+};
+
+/* device attributes */
+
+/**
+ * sas_address_show - sas address
+ * @dev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is the sas address for the target
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+sas_address_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
+
+ return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
+ (unsigned long long)sas_device_priv_data->sas_target->sas_address);
+}
+static DEVICE_ATTR_RO(sas_address);
+
+/**
+ * sas_device_handle_show - device handle
+ * @dev: pointer to embedded class device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * This is the firmware assigned device handle
+ *
+ * A sysfs 'read-only' shost attribute.
+ */
+static ssize_t
+sas_device_handle_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
+
+ return snprintf(buf, PAGE_SIZE, "0x%04x\n",
+ sas_device_priv_data->sas_target->handle);
+}
+static DEVICE_ATTR_RO(sas_device_handle);
+
+/**
+ * sas_ncq_io_prio_show - send prioritized io commands to device
+ * @dev: pointer to embedded device
+ * @attr: ?
+ * @buf: the buffer returned
+ *
+ * A sysfs 'read/write' sdev attribute, only works with SATA
+ */
+static ssize_t
+sas_ncq_prio_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ sas_device_priv_data->ncq_prio_enable);
+}
+
+static ssize_t
+sas_ncq_prio_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
+ bool ncq_prio_enable = 0;
+
+ if (kstrtobool(buf, &ncq_prio_enable))
+ return -EINVAL;
+
+ if (!scsih_ncq_prio_supp(sdev))
+ return -EINVAL;
+
+ sas_device_priv_data->ncq_prio_enable = ncq_prio_enable;
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(sas_ncq_prio_enable);
+
+struct device_attribute *mpt3sas_dev_attrs[] = {
+ &dev_attr_sas_address,
+ &dev_attr_sas_device_handle,
+ &dev_attr_sas_ncq_prio_enable,
+ NULL,
+};
+
+/* file operations table for mpt3ctl device */
+static const struct file_operations ctl_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = _ctl_ioctl,
+ .poll = _ctl_poll,
+ .fasync = _ctl_fasync,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = _ctl_ioctl_compat,
+#endif
+};
+
+/* file operations table for mpt2ctl device */
+static const struct file_operations ctl_gen2_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = _ctl_mpt2_ioctl,
+ .poll = _ctl_poll,
+ .fasync = _ctl_fasync,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = _ctl_mpt2_ioctl_compat,
+#endif
+};
+
+static struct miscdevice ctl_dev = {
+ .minor = MPT3SAS_MINOR,
+ .name = MPT3SAS_DEV_NAME,
+ .fops = &ctl_fops,
+};
+
+static struct miscdevice gen2_ctl_dev = {
+ .minor = MPT2SAS_MINOR,
+ .name = MPT2SAS_DEV_NAME,
+ .fops = &ctl_gen2_fops,
+};
+
+/**
+ * mpt3sas_ctl_init - main entry point for ctl.
+ * @hbas_to_enumerate: ?
+ */
+void
+mpt3sas_ctl_init(ushort hbas_to_enumerate)
+{
+ async_queue = NULL;
+
+ /* Don't register mpt3ctl ioctl device if
+ * hbas_to_enumarate is one.
+ */
+ if (hbas_to_enumerate != 1)
+ if (misc_register(&ctl_dev) < 0)
+ pr_err("%s can't register misc device [minor=%d]\n",
+ MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR);
+
+ /* Don't register mpt3ctl ioctl device if
+ * hbas_to_enumarate is two.
+ */
+ if (hbas_to_enumerate != 2)
+ if (misc_register(&gen2_ctl_dev) < 0)
+ pr_err("%s can't register misc device [minor=%d]\n",
+ MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
+
+ init_waitqueue_head(&ctl_poll_wait);
+}
+
+/**
+ * mpt3sas_ctl_exit - exit point for ctl
+ * @hbas_to_enumerate: ?
+ */
+void
+mpt3sas_ctl_exit(ushort hbas_to_enumerate)
+{
+ struct MPT3SAS_ADAPTER *ioc;
+ int i;
+
+ list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
+
+ /* free memory associated to diag buffers */
+ for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
+ if (!ioc->diag_buffer[i])
+ continue;
+ dma_free_coherent(&ioc->pdev->dev,
+ ioc->diag_buffer_sz[i],
+ ioc->diag_buffer[i],
+ ioc->diag_buffer_dma[i]);
+ ioc->diag_buffer[i] = NULL;
+ ioc->diag_buffer_status[i] = 0;
+ }
+
+ kfree(ioc->event_log);
+ }
+ if (hbas_to_enumerate != 1)
+ misc_deregister(&ctl_dev);
+ if (hbas_to_enumerate != 2)
+ misc_deregister(&gen2_ctl_dev);
+}