diff options
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_ctl.c')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_ctl.c | 4189 |
1 files changed, 4189 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c new file mode 100644 index 0000000000..efdb8178db --- /dev/null +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -0,0 +1,4189 @@ +/* + * 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_exit - exit point for ctl + * @hbas_to_enumerate: ? + */ +void +mpt3sas_ctl_exit(ushort hbas_to_enumerate) +{ + struct MPT3SAS_ADAPTER *ioc; + int i; + + list_for_each_entry(ioc, &mpt3sas_ioc_list, list) { + + /* free memory associated to diag buffers */ + for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { + if (!ioc->diag_buffer[i]) + continue; + dma_free_coherent(&ioc->pdev->dev, + ioc->diag_buffer_sz[i], + ioc->diag_buffer[i], + ioc->diag_buffer_dma[i]); + ioc->diag_buffer[i] = NULL; + ioc->diag_buffer_status[i] = 0; + } + + kfree(ioc->event_log); + } + if (hbas_to_enumerate != 1) + misc_deregister(&ctl_dev); + if (hbas_to_enumerate != 2) + misc_deregister(&gen2_ctl_dev); +} |