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linux/drivers/scsi/mpt3sas/mpt3sas_ctl.c
Tomas Henzl 6a965ee189 scsi: mpt3sas: Suppress a warning in debug kernel 
The mpt3sas_ctl_exit() should be called after communication with the
controller stops but currently it may cause false warnings about not
released memory. Fix this by letting mpt3sas_ctl_exit() handle misc driver
release per driver and release DMA in mpt3sas_ctl_release() per ioc.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Link: https://lore.kernel.org/r/20231019153706.7967-1-thenzl@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2023-11-15 10:50:31 -05:00

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/*
* Management Module Support for MPT (Message Passing Technology) based
* controllers
*
* This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.c
* 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;
case MPI2_FUNCTION_TOOLBOX:
desc = "toolbox";
break;
case MPI2_FUNCTION_NVME_ENCAPSULATED:
desc = "nvme_encapsulated";
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_pre_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;
/*
* add a log message to indicate the release
*/
ioc_info(ioc,
"%s: Releasing the trace buffer due to adapter reset.",
__func__);
ioc->htb_rel.buffer_rel_condition =
MPT3_DIAG_BUFFER_REL_TRIGGER;
mpt3sas_send_diag_release(ioc, i, &issue_reset);
}
}
/**
* mpt3sas_ctl_clear_outstanding_ioctls - clears outstanding ioctl cmd.
* @ioc: per adapter object
*
* The handler for doing any required cleanup or initialization.
*/
void mpt3sas_ctl_clear_outstanding_ioctls(struct MPT3SAS_ADAPTER *ioc)
{
dtmprintk(ioc,
ioc_info(ioc, "%s: clear outstanding ioctl cmd\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_done_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)
{
bool found = false;
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;
__le16 task_mid;
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.
*/
task_mid = cpu_to_le16(st->smid);
if (!tm_request->TaskMID)
tm_request->TaskMID = task_mid;
found = tm_request->TaskMID == task_mid;
}
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;
if (!ioc->multipath_on_hba) {
/* 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:
{
if (ioc->pdev->vendor == MPI2_MFGPAGE_VENDORID_ATTO) {
ioc_info(ioc, "Firmware download not supported for ATTO HBA.\n");
ret = -EPERM;
break;
}
fallthrough;
}
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 */
}
fallthrough;
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)) {
mpt3sas_check_cmd_timeout(ioc,
ioc->ctl_cmds.status, mpi_request,
karg.data_sge_offset, issue_reset);
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, 0, 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, 0, 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__));
ioc->reset_from_user = 1;
retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
ioc_info(ioc,
"Ioctl: 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_get_bufftype - return diag buffer type
* either TRACE, SNAPSHOT, or EXTENDED
* @ioc: per adapter object
* @unique_id: specifies the unique_id for the buffer
*
* returns MPT3_DIAG_UID_NOT_FOUND if the id not found
*/
static u8
_ctl_diag_get_bufftype(struct MPT3SAS_ADAPTER *ioc, u32 unique_id)
{
u8 index;
for (index = 0; index < MPI2_DIAG_BUF_TYPE_COUNT; index++) {
if (ioc->unique_id[index] == unique_id)
return index;
}
return MPT3_DIAG_UID_NOT_FOUND;
}
/**
* _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 (diag_register->unique_id == 0) {
ioc_err(ioc,
"%s: Invalid UID(0x%08x), buffer_type(0x%02x)\n", __func__,
diag_register->unique_id, buffer_type);
return -EINVAL;
}
if ((ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_APP_OWNED) &&
!(ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_RELEASED)) {
ioc_err(ioc,
"%s: buffer_type(0x%02x) is already registered by application with UID(0x%08x)\n",
__func__, buffer_type, ioc->unique_id[buffer_type]);
return -EINVAL;
}
if (ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_REGISTERED) {
/*
* If driver posts buffer initially, then an application wants
* to Register that buffer (own it) without Releasing first,
* the application Register command MUST have the same buffer
* type and size in the Register command (obtained from the
* Query command). Otherwise that Register command will be
* failed. If the application has released the buffer but wants
* to re-register it, it should be allowed as long as the
* Unique-Id/Size match.
*/
if (ioc->unique_id[buffer_type] == MPT3DIAGBUFFUNIQUEID &&
ioc->diag_buffer_sz[buffer_type] ==
diag_register->requested_buffer_size) {
if (!(ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_RELEASED)) {
dctlprintk(ioc, ioc_info(ioc,
"%s: diag_buffer (%d) ownership changed. old-ID(0x%08x), new-ID(0x%08x)\n",
__func__, buffer_type,
ioc->unique_id[buffer_type],
diag_register->unique_id));
/*
* Application wants to own the buffer with
* the same size.
*/
ioc->unique_id[buffer_type] =
diag_register->unique_id;
rc = 0; /* success */
goto out;
}
} else if (ioc->unique_id[buffer_type] !=
MPT3DIAGBUFFUNIQUEID) {
if (ioc->unique_id[buffer_type] !=
diag_register->unique_id ||
ioc->diag_buffer_sz[buffer_type] !=
diag_register->requested_buffer_size ||
!(ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_RELEASED)) {
ioc_err(ioc,
"%s: already has a registered buffer for buffer_type(0x%02x)\n",
__func__, buffer_type);
return -EINVAL;
}
} else {
ioc_err(ioc, "%s: already has a registered buffer for buffer_type(0x%02x)\n",
__func__, buffer_type);
return -EINVAL;
}
} else if (ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED) {
if (ioc->unique_id[buffer_type] != MPT3DIAGBUFFUNIQUEID ||
ioc->diag_buffer_sz[buffer_type] !=
diag_register->requested_buffer_size) {
ioc_err(ioc,
"%s: already a buffer is allocated for buffer_type(0x%02x) of size %d bytes, so please try registering again with same size\n",
__func__, buffer_type,
ioc->diag_buffer_sz[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);
memset(mpi_request, 0, ioc->request_sz);
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;
/* Reset ioc variables used for additional query commands */
ioc->reset_from_user = 0;
memset(&ioc->htb_rel, 0, sizeof(struct htb_rel_query));
ioc->diag_buffer_status[buffer_type] &=
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED;
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)) {
mpt3sas_check_cmd_timeout(ioc,
ioc->ctl_cmds.status, mpi_request,
sizeof(Mpi2DiagBufferPostRequest_t)/4, issue_reset);
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->diag_buffer[buffer_type] = NULL;
ioc->diag_buffer_status[buffer_type] &=
~MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED;
}
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;
u32 ret_val;
u32 trace_buff_size = ioc->manu_pg11.HostTraceBufferMaxSizeKB<<10;
u32 min_trace_buff_size = 0;
u32 decr_trace_buff_size = 0;
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;
diag_register.unique_id =
(ioc->hba_mpi_version_belonged == MPI2_VERSION) ?
(MPT2DIAGBUFFUNIQUEID):(MPT3DIAGBUFFUNIQUEID);
if (trace_buff_size != 0) {
diag_register.requested_buffer_size = trace_buff_size;
min_trace_buff_size =
ioc->manu_pg11.HostTraceBufferMinSizeKB<<10;
decr_trace_buff_size =
ioc->manu_pg11.HostTraceBufferDecrementSizeKB<<10;
if (min_trace_buff_size > trace_buff_size) {
/* The buff size is not set correctly */
ioc_err(ioc,
"Min Trace Buff size (%d KB) greater than Max Trace Buff size (%d KB)\n",
min_trace_buff_size>>10,
trace_buff_size>>10);
ioc_err(ioc,
"Using zero Min Trace Buff Size\n");
min_trace_buff_size = 0;
}
if (decr_trace_buff_size == 0) {
/*
* retry the min size if decrement
* is not available.
*/
decr_trace_buff_size =
trace_buff_size - min_trace_buff_size;
}
} else {
/* register for 2MB buffers */
diag_register.requested_buffer_size = 2 * (1024 * 1024);
}
do {
ret_val = _ctl_diag_register_2(ioc, &diag_register);
if (ret_val == -ENOMEM && min_trace_buff_size &&
(trace_buff_size - decr_trace_buff_size) >=
min_trace_buff_size) {
/* adjust the buffer size */
trace_buff_size -= decr_trace_buff_size;
diag_register.requested_buffer_size =
trace_buff_size;
} else
break;
} while (true);
if (ret_val == -ENOMEM)
ioc_err(ioc,
"Cannot allocate trace buffer memory. Last memory tried = %d KB\n",
diag_register.requested_buffer_size>>10);
else if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE]
& MPT3_DIAG_BUFFER_IS_REGISTERED) {
ioc_info(ioc, "Trace buffer memory %d KB allocated\n",
diag_register.requested_buffer_size>>10);
if (ioc->hba_mpi_version_belonged != MPI2_VERSION)
ioc->diag_buffer_status[
MPI2_DIAG_BUF_TYPE_TRACE] |=
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED;
}
}
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);
if (!rc && (ioc->diag_buffer_status[karg.buffer_type] &
MPT3_DIAG_BUFFER_IS_REGISTERED))
ioc->diag_buffer_status[karg.buffer_type] |=
MPT3_DIAG_BUFFER_IS_APP_OWNED;
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 = _ctl_diag_get_bufftype(ioc, karg.unique_id);
if (buffer_type == MPT3_DIAG_UID_NOT_FOUND) {
ioc_err(ioc, "%s: buffer with unique_id(0x%08x) not found\n",
__func__, karg.unique_id);
return -EINVAL;
}
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;
}
if (ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED) {
ioc->unique_id[buffer_type] = MPT3DIAGBUFFUNIQUEID;
ioc->diag_buffer_status[buffer_type] &=
~MPT3_DIAG_BUFFER_IS_APP_OWNED;
ioc->diag_buffer_status[buffer_type] &=
~MPT3_DIAG_BUFFER_IS_REGISTERED;
} else {
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_DRIVER_ALLOCATED)) {
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) {
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_REGISTERED))
karg.application_flags |= MPT3_APP_FLAGS_BUFFER_VALID;
if (!(ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_RELEASED))
karg.application_flags |= MPT3_APP_FLAGS_FW_BUFFER_ACCESS;
if (!(ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED))
karg.application_flags |= MPT3_APP_FLAGS_DYNAMIC_BUFFER_ALLOC;
if ((ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_APP_OWNED))
karg.application_flags |= MPT3_APP_FLAGS_APP_OWNED;
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;
u8 reset_needed = 0;
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);
memset(mpi_request, 0, ioc->request_sz);
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)) {
mpt3sas_check_cmd_timeout(ioc,
ioc->ctl_cmds.status, mpi_request,
sizeof(Mpi2DiagReleaseRequest_t)/4, reset_needed);
*issue_reset = reset_needed;
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 = _ctl_diag_get_bufftype(ioc, karg.unique_id);
if (buffer_type == MPT3_DIAG_UID_NOT_FOUND) {
ioc_err(ioc, "%s: buffer with unique_id(0x%08x) not found\n",
__func__, karg.unique_id);
return -EINVAL;
}
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 -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;
}
/* 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 = _ctl_diag_get_bufftype(ioc, karg.unique_id);
if (buffer_type == MPT3_DIAG_UID_NOT_FOUND) {
ioc_err(ioc, "%s: buffer with unique_id(0x%08x) not found\n",
__func__, karg.unique_id);
return -EINVAL;
}
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);
memset(mpi_request, 0, ioc->request_sz);
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)) {
mpt3sas_check_cmd_timeout(ioc,
ioc->ctl_cmds.status, mpi_request,
sizeof(Mpi2DiagBufferPostRequest_t)/4, issue_reset);
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;
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;
}
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;
}
/**
* _ctl_addnl_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 unique_id. Driver will
* inspect unique_id first, if valid, fill the details related to cause
* for diag buffer release.
*/
static long
_ctl_addnl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
{
struct mpt3_addnl_diag_query karg;
u32 buffer_type = 0;
if (copy_from_user(&karg, arg, sizeof(karg))) {
pr_err("%s: failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -EFAULT;
}
dctlprintk(ioc, ioc_info(ioc, "%s\n", __func__));
if (karg.unique_id == 0) {
ioc_err(ioc, "%s: unique_id is(0x%08x)\n",
__func__, karg.unique_id);
return -EPERM;
}
buffer_type = _ctl_diag_get_bufftype(ioc, karg.unique_id);
if (buffer_type == MPT3_DIAG_UID_NOT_FOUND) {
ioc_err(ioc, "%s: buffer with unique_id(0x%08x) not found\n",
__func__, karg.unique_id);
return -EPERM;
}
memset(&karg.rel_query, 0, sizeof(karg.rel_query));
if ((ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
ioc_info(ioc, "%s: buffer_type(0x%02x) is not registered\n",
__func__, buffer_type);
goto out;
}
if ((ioc->diag_buffer_status[buffer_type] &
MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
ioc_err(ioc, "%s: buffer_type(0x%02x) is not released\n",
__func__, buffer_type);
return -EPERM;
}
memcpy(&karg.rel_query, &ioc->htb_rel, sizeof(karg.rel_query));
out:
if (copy_to_user(arg, &karg, sizeof(struct mpt3_addnl_diag_query))) {
ioc_err(ioc, "%s: unable to write mpt3_addnl_diag_query data @ %p\n",
__func__, arg);
return -EFAULT;
}
return 0;
}
#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 = -ENOIOCTLCMD;
/* 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;
case MPT3ADDNLDIAGQUERY:
if (_IOC_SIZE(cmd) == sizeof(struct mpt3_addnl_diag_query))
ret = _ctl_addnl_diag_query(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);
/**
* host_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;
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;
sz = sizeof(io_unit_pg3);
memset(&io_unit_pg3, 0, sz);
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:
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;
if (ioc->manu_pg11.HostTraceBufferMaxSizeKB != 0 &&
ioc->diag_buffer_sz[MPI2_DIAG_BUF_TYPE_TRACE] != 0) {
/* post the same buffer allocated previously */
diag_register.requested_buffer_size =
ioc->diag_buffer_sz[MPI2_DIAG_BUF_TYPE_TRACE];
} else {
/*
* Free the diag buffer memory which was previously
* allocated by an application.
*/
if ((ioc->diag_buffer_sz[MPI2_DIAG_BUF_TYPE_TRACE] != 0)
&&
(ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_APP_OWNED)) {
dma_free_coherent(&ioc->pdev->dev,
ioc->diag_buffer_sz[MPI2_DIAG_BUF_TYPE_TRACE],
ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE],
ioc->diag_buffer_dma[MPI2_DIAG_BUF_TYPE_TRACE]);
ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE] =
NULL;
}
diag_register.requested_buffer_size = (1024 * 1024);
}
diag_register.unique_id =
(ioc->hba_mpi_version_belonged == MPI2_VERSION) ?
(MPT2DIAGBUFFUNIQUEID):(MPT3DIAGBUFFUNIQUEID);
ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
_ctl_diag_register_2(ioc, &diag_register);
if (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) {
ioc_info(ioc,
"Trace buffer %d KB allocated through sysfs\n",
diag_register.requested_buffer_size>>10);
if (ioc->hba_mpi_version_belonged != MPI2_VERSION)
ioc->diag_buffer_status[
MPI2_DIAG_BUF_TYPE_TRACE] |=
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED;
}
} 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");
ioc->htb_rel.buffer_rel_condition = MPT3_DIAG_BUFFER_REL_SYSFS;
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);
struct SL_WH_MASTER_TRIGGER_T *master_tg;
unsigned long flags;
ssize_t rc;
bool set = 1;
rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
if (ioc->supports_trigger_pages) {
master_tg = kzalloc(sizeof(struct SL_WH_MASTER_TRIGGER_T),
GFP_KERNEL);
if (!master_tg)
return -ENOMEM;
memcpy(master_tg, buf, rc);
if (!master_tg->MasterData)
set = 0;
if (mpt3sas_config_update_driver_trigger_pg1(ioc, master_tg,
set)) {
kfree(master_tg);
return -EFAULT;
}
kfree(master_tg);
}
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
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);
struct SL_WH_EVENT_TRIGGERS_T *event_tg;
unsigned long flags;
ssize_t sz;
bool set = 1;
sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
if (ioc->supports_trigger_pages) {
event_tg = kzalloc(sizeof(struct SL_WH_EVENT_TRIGGERS_T),
GFP_KERNEL);
if (!event_tg)
return -ENOMEM;
memcpy(event_tg, buf, sz);
if (!event_tg->ValidEntries)
set = 0;
if (mpt3sas_config_update_driver_trigger_pg2(ioc, event_tg,
set)) {
kfree(event_tg);
return -EFAULT;
}
kfree(event_tg);
}
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
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);
struct SL_WH_SCSI_TRIGGERS_T *scsi_tg;
unsigned long flags;
ssize_t sz;
bool set = 1;
sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count);
if (ioc->supports_trigger_pages) {
scsi_tg = kzalloc(sizeof(struct SL_WH_SCSI_TRIGGERS_T),
GFP_KERNEL);
if (!scsi_tg)
return -ENOMEM;
memcpy(scsi_tg, buf, sz);
if (!scsi_tg->ValidEntries)
set = 0;
if (mpt3sas_config_update_driver_trigger_pg3(ioc, scsi_tg,
set)) {
kfree(scsi_tg);
return -EFAULT;
}
kfree(scsi_tg);
}
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
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_mpi_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);
struct SL_WH_MPI_TRIGGERS_T *mpi_tg;
unsigned long flags;
ssize_t sz;
bool set = 1;
sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
if (ioc->supports_trigger_pages) {
mpi_tg = kzalloc(sizeof(struct SL_WH_MPI_TRIGGERS_T),
GFP_KERNEL);
if (!mpi_tg)
return -ENOMEM;
memcpy(mpi_tg, buf, sz);
if (!mpi_tg->ValidEntries)
set = 0;
if (mpt3sas_config_update_driver_trigger_pg4(ioc, mpi_tg,
set)) {
kfree(mpi_tg);
return -EFAULT;
}
kfree(mpi_tg);
}
spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
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
* @attr: unused
* @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
* @attr: unused
* @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
* @attr: unused
* @buf: the buffer returned
* @count: unused
*
* 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 = ioc->max_nvme_qd;
else
qdepth = (sas_target_priv_data->sas_dev->port_type > 1) ?
ioc->max_wideport_qd : ioc->max_narrowport_qd;
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);
static struct attribute *mpt3sas_host_attrs[] = {
&dev_attr_version_fw.attr,
&dev_attr_version_bios.attr,
&dev_attr_version_mpi.attr,
&dev_attr_version_product.attr,
&dev_attr_version_nvdata_persistent.attr,
&dev_attr_version_nvdata_default.attr,
&dev_attr_board_name.attr,
&dev_attr_board_assembly.attr,
&dev_attr_board_tracer.attr,
&dev_attr_io_delay.attr,
&dev_attr_device_delay.attr,
&dev_attr_logging_level.attr,
&dev_attr_fwfault_debug.attr,
&dev_attr_fw_queue_depth.attr,
&dev_attr_host_sas_address.attr,
&dev_attr_ioc_reset_count.attr,
&dev_attr_host_trace_buffer_size.attr,
&dev_attr_host_trace_buffer.attr,
&dev_attr_host_trace_buffer_enable.attr,
&dev_attr_reply_queue_count.attr,
&dev_attr_diag_trigger_master.attr,
&dev_attr_diag_trigger_event.attr,
&dev_attr_diag_trigger_scsi.attr,
&dev_attr_diag_trigger_mpi.attr,
&dev_attr_drv_support_bitmap.attr,
&dev_attr_BRM_status.attr,
&dev_attr_enable_sdev_max_qd.attr,
NULL,
};
static const struct attribute_group mpt3sas_host_attr_group = {
.attrs = mpt3sas_host_attrs
};
const struct attribute_group *mpt3sas_host_groups[] = {
&mpt3sas_host_attr_group,
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_prio_supported_show - Indicate if device supports NCQ priority
* @dev: pointer to embedded device
* @attr: sas_ncq_prio_supported attribute descriptor
* @buf: the buffer returned
*
* A sysfs 'read-only' sdev attribute, only works with SATA
*/
static ssize_t
sas_ncq_prio_supported_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
return sysfs_emit(buf, "%d\n", scsih_ncq_prio_supp(sdev));
}
static DEVICE_ATTR_RO(sas_ncq_prio_supported);
/**
* sas_ncq_prio_enable_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);
static struct attribute *mpt3sas_dev_attrs[] = {
&dev_attr_sas_address.attr,
&dev_attr_sas_device_handle.attr,
&dev_attr_sas_ncq_prio_supported.attr,
&dev_attr_sas_ncq_prio_enable.attr,
NULL,
};
static const struct attribute_group mpt3sas_dev_attr_group = {
.attrs = mpt3sas_dev_attrs
};
const struct attribute_group *mpt3sas_dev_groups[] = {
&mpt3sas_dev_attr_group,
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_release - release dma for ctl
* @ioc: per adapter object
*/
void
mpt3sas_ctl_release(struct MPT3SAS_ADAPTER *ioc)
{
int i;
/* 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);
}
/**
* mpt3sas_ctl_exit - exit point for ctl
* @hbas_to_enumerate: ?
*/
void
mpt3sas_ctl_exit(ushort hbas_to_enumerate)
{
if (hbas_to_enumerate != 1)
misc_deregister(&ctl_dev);
if (hbas_to_enumerate != 2)
misc_deregister(&gen2_ctl_dev);
}
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