/* * Management Module Support for MPT (Message Passing Technology) based * controllers * * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c * Copyright (C) 2007-2010 LSI Corporation * (mailto:DL-MPTFusionLinux@lsi.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * NO WARRANTY * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is * solely responsible for determining the appropriateness of using and * distributing the Program and assumes all risks associated with its * exercise of rights under this Agreement, including but not limited to * the risks and costs of program errors, damage to or loss of data, * programs or equipment, and unavailability or interruption of operations. * DISCLAIMER OF LIABILITY * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mpt2sas_base.h" #include "mpt2sas_ctl.h" static DEFINE_MUTEX(_ctl_mutex); static struct fasync_struct *async_queue; static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait); static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset); /** * 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, }; #ifdef CONFIG_SCSI_MPT2SAS_LOGGING /** * _ctl_sas_device_find_by_handle - sas device search * @ioc: per adapter object * @handle: sas device handle (assigned by firmware) * Context: Calling function should acquire ioc->sas_device_lock * * This searches for sas_device based on sas_address, then return sas_device * object. */ static struct _sas_device * _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle) { struct _sas_device *sas_device, *r; r = NULL; list_for_each_entry(sas_device, &ioc->sas_device_list, list) { if (sas_device->handle != handle) continue; r = sas_device; goto out; } out: return r; } /** * _ctl_display_some_debug - debug routine * @ioc: per adapter object * @smid: system request message index * @calling_function_name: string pass from calling function * @mpi_reply: reply message frame * Context: none. * * Function for displaying debug info helpful when debugging issues * in this module. */ static void _ctl_display_some_debug(struct MPT2SAS_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 = mpt2sas_base_get_msg_frame(ioc, smid); switch (mpi_request->Function) { case MPI2_FUNCTION_SCSI_IO_REQUEST: { Mpi2SCSIIORequest_t *scsi_request = (Mpi2SCSIIORequest_t *)mpi_request; snprintf(ioc->tmp_string, MPT_STRING_LENGTH, "scsi_io, cmd(0x%02x), cdb_len(%d)", scsi_request->CDB.CDB32[0], le16_to_cpu(scsi_request->IoFlags) & 0xF); desc = ioc->tmp_string; break; } case MPI2_FUNCTION_SCSI_TASK_MGMT: desc = "task_mgmt"; break; case MPI2_FUNCTION_IOC_INIT: desc = "ioc_init"; break; case MPI2_FUNCTION_IOC_FACTS: desc = "ioc_facts"; break; case MPI2_FUNCTION_CONFIG: { Mpi2ConfigRequest_t *config_request = (Mpi2ConfigRequest_t *)mpi_request; snprintf(ioc->tmp_string, MPT_STRING_LENGTH, "config, type(0x%02x), ext_type(0x%02x), number(%d)", (config_request->Header.PageType & MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType, config_request->Header.PageNumber); desc = ioc->tmp_string; break; } case MPI2_FUNCTION_PORT_FACTS: desc = "port_facts"; break; case MPI2_FUNCTION_PORT_ENABLE: desc = "port_enable"; break; case MPI2_FUNCTION_EVENT_NOTIFICATION: desc = "event_notification"; break; case MPI2_FUNCTION_FW_DOWNLOAD: desc = "fw_download"; break; case MPI2_FUNCTION_FW_UPLOAD: desc = "fw_upload"; break; case MPI2_FUNCTION_RAID_ACTION: desc = "raid_action"; break; case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH: { Mpi2SCSIIORequest_t *scsi_request = (Mpi2SCSIIORequest_t *)mpi_request; snprintf(ioc->tmp_string, MPT_STRING_LENGTH, "raid_pass, cmd(0x%02x), cdb_len(%d)", scsi_request->CDB.CDB32[0], le16_to_cpu(scsi_request->IoFlags) & 0xF); desc = ioc->tmp_string; break; } case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL: desc = "sas_iounit_cntl"; break; case MPI2_FUNCTION_SATA_PASSTHROUGH: desc = "sata_pass"; break; case MPI2_FUNCTION_DIAG_BUFFER_POST: desc = "diag_buffer_post"; break; case MPI2_FUNCTION_DIAG_RELEASE: desc = "diag_release"; break; case MPI2_FUNCTION_SMP_PASSTHROUGH: desc = "smp_passthrough"; break; } if (!desc) return; printk(MPT2SAS_INFO_FMT "%s: %s, smid(%d)\n", ioc->name, calling_function_name, desc, smid); if (!mpi_reply) return; if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo) printk(MPT2SAS_INFO_FMT "\tiocstatus(0x%04x), loginfo(0x%08x)\n", ioc->name, le16_to_cpu(mpi_reply->IOCStatus), le32_to_cpu(mpi_reply->IOCLogInfo)); if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) { Mpi2SCSIIOReply_t *scsi_reply = (Mpi2SCSIIOReply_t *)mpi_reply; struct _sas_device *sas_device = NULL; unsigned long flags; spin_lock_irqsave(&ioc->sas_device_lock, flags); sas_device = _ctl_sas_device_find_by_handle(ioc, le16_to_cpu(scsi_reply->DevHandle)); if (sas_device) { printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), " "phy(%d)\n", ioc->name, (unsigned long long) sas_device->sas_address, sas_device->phy); printk(MPT2SAS_WARN_FMT "\tenclosure_logical_id(0x%016llx), slot(%d)\n", ioc->name, sas_device->enclosure_logical_id, sas_device->slot); } spin_unlock_irqrestore(&ioc->sas_device_lock, flags); if (scsi_reply->SCSIState || scsi_reply->SCSIStatus) printk(MPT2SAS_INFO_FMT "\tscsi_state(0x%02x), scsi_status" "(0x%02x)\n", ioc->name, scsi_reply->SCSIState, scsi_reply->SCSIStatus); } } #endif /** * mpt2sas_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 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) { MPI2DefaultReply_t *mpi_reply; Mpi2SCSIIOReply_t *scsiio_reply; const void *sense_data; u32 sz; if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED) return 1; if (ioc->ctl_cmds.smid != smid) return 1; ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE; mpi_reply = mpt2sas_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 |= MPT2_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 = mpt2sas_base_get_sense_buffer(ioc, smid); memcpy(ioc->ctl_cmds.sense, sense_data, sz); } } } #ifdef CONFIG_SCSI_MPT2SAS_LOGGING _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply); #endif ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING; complete(&ioc->ctl_cmds.done); return 1; } /** * _ctl_check_event_type - determines when an event needs logging * @ioc: per adapter object * @event: firmware event * * The bitmask in ioc->event_type[] indicates which events should be * be saved in the driver event_log. This bitmask is set by application. * * Returns 1 when event should be captured, or zero means no match. */ static int _ctl_check_event_type(struct MPT2SAS_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]; } /** * mpt2sas_ctl_add_to_event_log - add event * @ioc: per adapter object * @mpi_reply: reply message frame * * Return nothing. */ void mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc, Mpi2EventNotificationReply_t *mpi_reply) { struct MPT2_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 % MPT2SAS_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, MPT2_EVENT_DATA_SIZE); memset(event_log[i].data, 0, MPT2_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); } } /** * mpt2sas_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 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply) { Mpi2EventNotificationReply_t *mpi_reply; mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply); mpt2sas_ctl_add_to_event_log(ioc, mpi_reply); return 1; } /** * _ctl_verify_adapter - validates ioc_number passed from application * @ioc: per adapter object * @iocpp: The ioc pointer is returned in this. * * Return (-1) means error, else ioc_number. */ static int _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp) { struct MPT2SAS_ADAPTER *ioc; list_for_each_entry(ioc, &mpt2sas_ioc_list, list) { if (ioc->id != ioc_number) continue; *iocpp = ioc; return ioc_number; } *iocpp = NULL; return -1; } /** * mpt2sas_ctl_reset_handler - reset callback handler (for ctl) * @ioc: per adapter object * @reset_phase: phase * * The handler for doing any required cleanup or initialization. * * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET, * MPT2_IOC_DONE_RESET */ void mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase) { int i; u8 issue_reset; switch (reset_phase) { case MPT2_IOC_PRE_RESET: dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "MPT2_IOC_PRE_RESET\n", ioc->name, __func__)); for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { if (!(ioc->diag_buffer_status[i] & MPT2_DIAG_BUFFER_IS_REGISTERED)) continue; if ((ioc->diag_buffer_status[i] & MPT2_DIAG_BUFFER_IS_RELEASED)) continue; _ctl_send_release(ioc, i, &issue_reset); } break; case MPT2_IOC_AFTER_RESET: dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__)); if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) { ioc->ctl_cmds.status |= MPT2_CMD_RESET; mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid); complete(&ioc->ctl_cmds.done); } break; case MPT2_IOC_DONE_RESET: dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "MPT2_IOC_DONE_RESET\n", ioc->name, __func__)); for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { if (!(ioc->diag_buffer_status[i] & MPT2_DIAG_BUFFER_IS_REGISTERED)) continue; if ((ioc->diag_buffer_status[i] & MPT2_DIAG_BUFFER_IS_RELEASED)) continue; ioc->diag_buffer_status[i] |= MPT2_DIAG_BUFFER_IS_DIAG_RESET; } break; } } /** * _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_release - * @inode - * @filep - * * Called when application releases the fasyn callback handler. */ static int _ctl_release(struct inode *inode, struct file *filep) { return fasync_helper(-1, filep, 0, &async_queue); } /** * _ctl_poll - * @file - * @wait - * */ static unsigned int _ctl_poll(struct file *filep, poll_table *wait) { struct MPT2SAS_ADAPTER *ioc; poll_wait(filep, &ctl_poll_wait, wait); list_for_each_entry(ioc, &mpt2sas_ioc_list, list) { if (ioc->aen_event_read_flag) return POLLIN | POLLRDNORM; } return 0; } /** * _ctl_set_task_mid - assign an active smid to tm request * @ioc: per adapter object * @karg - (struct mpt2_ioctl_command) * @tm_request - pointer to mf from user space * * Returns 0 when an smid if found, else fail. * during failure, the reply frame is filled. */ static int _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg, Mpi2SCSITaskManagementRequest_t *tm_request) { u8 found = 0; u16 i; u16 handle; struct scsi_cmnd *scmd; struct MPT2SAS_DEVICE *priv_data; unsigned long flags; Mpi2SCSITaskManagementReply_t *tm_reply; u32 sz; u32 lun; char *desc = NULL; if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) desc = "abort_task"; else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) desc = "query_task"; else return 0; lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN); handle = le16_to_cpu(tm_request->DevHandle); spin_lock_irqsave(&ioc->scsi_lookup_lock, flags); for (i = ioc->scsiio_depth; i && !found; i--) { scmd = ioc->scsi_lookup[i - 1].scmd; if (scmd == NULL || scmd->device == NULL || scmd->device->hostdata == NULL) continue; if (lun != scmd->device->lun) continue; priv_data = scmd->device->hostdata; if (priv_data->sas_target == NULL) continue; if (priv_data->sas_target->handle != handle) continue; tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid); found = 1; } spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags); if (!found) { dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name, desc, le16_to_cpu(tm_request->DevHandle), lun)); tm_reply = ioc->ctl_cmds.reply; tm_reply->DevHandle = tm_request->DevHandle; tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; tm_reply->TaskType = tm_request->TaskType; tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4; tm_reply->VP_ID = tm_request->VP_ID; tm_reply->VF_ID = tm_request->VF_ID; sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz); if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply, sz)) printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return 1; } dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name, desc, le16_to_cpu(tm_request->DevHandle), lun, le16_to_cpu(tm_request->TaskMID))); return 0; } /** * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode * @ioc: per adapter object * @karg - (struct mpt2_ioctl_command) * @mf - pointer to mf in user space * @state - NON_BLOCKING or BLOCKING */ static long _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command karg, void __user *mf, enum block_state state) { MPI2RequestHeader_t *mpi_request = NULL, *request; MPI2DefaultReply_t *mpi_reply; u32 ioc_state; u16 ioc_status; u16 smid; unsigned long timeout, timeleft; u8 issue_reset; u32 sz; void *psge; void *data_out = NULL; dma_addr_t data_out_dma; size_t data_out_sz = 0; void *data_in = NULL; dma_addr_t data_in_dma; size_t data_in_sz = 0; u32 sgl_flags; long ret; u16 wait_state_count; issue_reset = 0; if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex)) return -EAGAIN; else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) return -ERESTARTSYS; if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) { printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n", ioc->name, __func__); ret = -EAGAIN; goto out; } wait_state_count = 0; ioc_state = mpt2sas_base_get_iocstate(ioc, 1); while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { if (wait_state_count++ == 10) { printk(MPT2SAS_ERR_FMT "%s: failed due to ioc not operational\n", ioc->name, __func__); ret = -EFAULT; goto out; } ssleep(1); ioc_state = mpt2sas_base_get_iocstate(ioc, 1); printk(MPT2SAS_INFO_FMT "%s: waiting for " "operational state(count=%d)\n", ioc->name, __func__, wait_state_count); } if (wait_state_count) printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n", ioc->name, __func__); mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL); if (!mpi_request) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a memory for " "mpi_request\n", ioc->name, __func__); ret = -ENOMEM; goto out; } /* Check for overflow and wraparound */ if (karg.data_sge_offset * 4 > ioc->request_sz || karg.data_sge_offset > (UINT_MAX / 4)) { ret = -EINVAL; goto out; } /* copy in request message frame from user */ if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); ret = -EFAULT; goto out; } if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) { smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); ret = -EAGAIN; goto out; } } else { smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); ret = -EAGAIN; goto out; } } ret = 0; ioc->ctl_cmds.status = MPT2_CMD_PENDING; memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); request = mpt2sas_base_get_msg_frame(ioc, smid); memcpy(request, mpi_request, karg.data_sge_offset*4); ioc->ctl_cmds.smid = smid; data_out_sz = karg.data_out_size; data_in_sz = karg.data_in_size; if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) { if (!le16_to_cpu(mpi_request->FunctionDependent1) || le16_to_cpu(mpi_request->FunctionDependent1) > ioc->facts.MaxDevHandle) { ret = -EINVAL; mpt2sas_base_free_smid(ioc, smid); goto out; } } /* obtain dma-able memory for data transfer */ if (data_out_sz) /* WRITE */ { data_out = pci_alloc_consistent(ioc->pdev, data_out_sz, &data_out_dma); if (!data_out) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); ret = -ENOMEM; mpt2sas_base_free_smid(ioc, smid); goto out; } if (copy_from_user(data_out, karg.data_out_buf_ptr, data_out_sz)) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); ret = -EFAULT; mpt2sas_base_free_smid(ioc, smid); goto out; } } if (data_in_sz) /* READ */ { data_in = pci_alloc_consistent(ioc->pdev, data_in_sz, &data_in_dma); if (!data_in) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); ret = -ENOMEM; mpt2sas_base_free_smid(ioc, smid); goto out; } } /* add scatter gather elements */ psge = (void *)request + (karg.data_sge_offset*4); if (!data_out_sz && !data_in_sz) { mpt2sas_base_build_zero_len_sge(ioc, psge); } else if (data_out_sz && data_in_sz) { /* WRITE sgel first */ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; ioc->base_add_sg_single(psge, sgl_flags | data_out_sz, data_out_dma); /* incr sgel */ psge += ioc->sge_size; /* READ sgel last */ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; ioc->base_add_sg_single(psge, sgl_flags | data_in_sz, data_in_dma); } else if (data_out_sz) /* WRITE */ { sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; ioc->base_add_sg_single(psge, sgl_flags | data_out_sz, data_out_dma); } else if (data_in_sz) /* READ */ { sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT | MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST); sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT; ioc->base_add_sg_single(psge, sgl_flags | data_in_sz, data_in_dma); } /* send command to firmware */ #ifdef CONFIG_SCSI_MPT2SAS_LOGGING _ctl_display_some_debug(ioc, smid, "ctl_request", NULL); #endif switch (mpi_request->Function) { case MPI2_FUNCTION_SCSI_IO_REQUEST: case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH: { Mpi2SCSIIORequest_t *scsiio_request = (Mpi2SCSIIORequest_t *)request; scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; scsiio_request->SenseBufferLowAddress = mpt2sas_base_get_sense_buffer_dma(ioc, smid); memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE); if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST) mpt2sas_base_put_smid_scsi_io(ioc, smid, le16_to_cpu(mpi_request->FunctionDependent1)); else mpt2sas_base_put_smid_default(ioc, smid); break; } case MPI2_FUNCTION_SCSI_TASK_MGMT: { Mpi2SCSITaskManagementRequest_t *tm_request = (Mpi2SCSITaskManagementRequest_t *)request; dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: " "handle(0x%04x), task_type(0x%02x)\n", ioc->name, le16_to_cpu(tm_request->DevHandle), tm_request->TaskType)); 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)) { mpt2sas_base_free_smid(ioc, smid); goto out; } } mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu( tm_request->DevHandle)); mpt2sas_base_put_smid_hi_priority(ioc, smid); break; } case MPI2_FUNCTION_SMP_PASSTHROUGH: { Mpi2SmpPassthroughRequest_t *smp_request = (Mpi2SmpPassthroughRequest_t *)mpi_request; u8 *data; /* ioc determines which port to use */ smp_request->PhysicalPort = 0xFF; if (smp_request->PassthroughFlags & MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE) data = (u8 *)&smp_request->SGL; else data = data_out; if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) { ioc->ioc_link_reset_in_progress = 1; ioc->ignore_loginfos = 1; } mpt2sas_base_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; } mpt2sas_base_put_smid_default(ioc, smid); break; } default: mpt2sas_base_put_smid_default(ioc, smid); break; } if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT) timeout = MPT2_IOCTL_DEFAULT_TIMEOUT; else timeout = karg.timeout; init_completion(&ioc->ctl_cmds.done); timeleft = 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; mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu( tm_request->DevHandle)); } 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 & MPT2_CMD_COMPLETE)) { printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name, __func__); _debug_dump_mf(mpi_request, karg.data_sge_offset); if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET)) issue_reset = 1; goto issue_host_reset; } mpi_reply = ioc->ctl_cmds.reply; ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; #ifdef CONFIG_SCSI_MPT2SAS_LOGGING if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT && (ioc->logging_level & MPT_DEBUG_TM)) { Mpi2SCSITaskManagementReply_t *tm_reply = (Mpi2SCSITaskManagementReply_t *)mpi_reply; printk(MPT2SAS_INFO_FMT "TASK_MGMT: " "IOCStatus(0x%04x), IOCLogInfo(0x%08x), " "TerminationCount(0x%08x)\n", ioc->name, le16_to_cpu(tm_reply->IOCStatus), le32_to_cpu(tm_reply->IOCLogInfo), le32_to_cpu(tm_reply->TerminationCount)); } #endif /* copy out xdata to user */ if (data_in_sz) { if (copy_to_user(karg.data_in_buf_ptr, data_in, data_in_sz)) { printk(KERN_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)) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); ret = -ENODATA; goto out; } } /* copy out sense to user */ if (karg.max_sense_bytes && (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) { sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE); if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense, sz)) { printk(KERN_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)) { printk(MPT2SAS_INFO_FMT "issue target reset: handle " "= (0x%04x)\n", ioc->name, le16_to_cpu(mpi_request->FunctionDependent1)); mpt2sas_halt_firmware(ioc); mpt2sas_scsih_issue_tm(ioc, le16_to_cpu(mpi_request->FunctionDependent1), 0, 0, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10, 0, TM_MUTEX_ON); ioc->tm_cmds.status = MPT2_CMD_NOT_USED; } else mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); } out: /* free memory associated with sg buffers */ if (data_in) pci_free_consistent(ioc->pdev, data_in_sz, data_in, data_in_dma); if (data_out) pci_free_consistent(ioc->pdev, data_out_sz, data_out, data_out_dma); kfree(mpi_request); ioc->ctl_cmds.status = MPT2_CMD_NOT_USED; mutex_unlock(&ioc->ctl_cmds.mutex); return ret; } /** * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode * @arg - user space buffer containing ioctl content */ static long _ctl_getiocinfo(void __user *arg) { struct mpt2_ioctl_iocinfo karg; struct MPT2SAS_ADAPTER *ioc; u8 revision; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name, __func__)); memset(&karg, 0 , sizeof(karg)); if (ioc->is_warpdrive) karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200; else karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2; if (ioc->pfacts) karg.port_number = ioc->pfacts[0].PortNumber; pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision); karg.hw_rev = 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, MPT2SAS_DRIVER_NAME); strcat(karg.driver_version, "-"); strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION); karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion); if (copy_to_user(arg, &karg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } return 0; } /** * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode * @arg - user space buffer containing ioctl content */ static long _ctl_eventquery(void __user *arg) { struct mpt2_ioctl_eventquery karg; struct MPT2SAS_ADAPTER *ioc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name, __func__)); karg.event_entries = MPT2SAS_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))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } return 0; } /** * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode * @arg - user space buffer containing ioctl content */ static long _ctl_eventenable(void __user *arg) { struct mpt2_ioctl_eventenable karg; struct MPT2SAS_ADAPTER *ioc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name, __func__)); if (ioc->event_log) return 0; memcpy(ioc->event_type, karg.event_types, MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32)); mpt2sas_base_validate_event_type(ioc, ioc->event_type); /* initialize event_log */ ioc->event_context = 0; ioc->aen_event_read_flag = 0; ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE, sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL); if (!ioc->event_log) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -ENOMEM; } return 0; } /** * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode * @arg - user space buffer containing ioctl content */ static long _ctl_eventreport(void __user *arg) { struct mpt2_ioctl_eventreport karg; struct MPT2SAS_ADAPTER *ioc; u32 number_bytes, max_events, max; struct mpt2_ioctl_eventreport __user *uarg = arg; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name, __func__)); number_bytes = karg.hdr.max_data_size - sizeof(struct mpt2_ioctl_header); max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS); max = min_t(u32, MPT2SAS_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 MPT2_IOCTL_EVENTS); if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) { printk(KERN_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 MPT2HARDRESET opcode * @arg - user space buffer containing ioctl content */ static long _ctl_do_reset(void __user *arg) { struct mpt2_ioctl_diag_reset karg; struct MPT2SAS_ADAPTER *ioc; int retval; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name, __func__)); retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); printk(MPT2SAS_INFO_FMT "host reset: %s\n", ioc->name, ((!retval) ? "SUCCESS" : "FAILED")); return 0; } /** * _ctl_btdh_search_sas_device - searching for sas device * @ioc: per adapter object * @btdh: btdh ioctl payload */ static int _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_btdh_mapping *btdh) { struct _sas_device *sas_device; unsigned long flags; int rc = 0; if (list_empty(&ioc->sas_device_list)) return rc; spin_lock_irqsave(&ioc->sas_device_lock, flags); list_for_each_entry(sas_device, &ioc->sas_device_list, list) { if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF && btdh->handle == sas_device->handle) { btdh->bus = sas_device->channel; btdh->id = sas_device->id; rc = 1; goto out; } else if (btdh->bus == sas_device->channel && btdh->id == sas_device->id && btdh->handle == 0xFFFF) { btdh->handle = sas_device->handle; rc = 1; goto out; } } out: spin_unlock_irqrestore(&ioc->sas_device_lock, flags); return rc; } /** * _ctl_btdh_search_raid_device - searching for raid device * @ioc: per adapter object * @btdh: btdh ioctl payload */ static int _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc, struct mpt2_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 MPT2BTDHMAPPING opcode * @arg - user space buffer containing ioctl content */ static long _ctl_btdh_mapping(void __user *arg) { struct mpt2_ioctl_btdh_mapping karg; struct MPT2SAS_ADAPTER *ioc; int rc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); rc = _ctl_btdh_search_sas_device(ioc, &karg); if (!rc) _ctl_btdh_search_raid_device(ioc, &karg); if (copy_to_user(arg, &karg, sizeof(karg))) { printk(KERN_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 MPT2SAS_ADAPTER *ioc, u8 buffer_type) { u8 rc = 0; switch (buffer_type) { case MPI2_DIAG_BUF_TYPE_TRACE: if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) rc = 1; break; case MPI2_DIAG_BUF_TYPE_SNAPSHOT: if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) rc = 1; break; case MPI2_DIAG_BUF_TYPE_EXTENDED: if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) rc = 1; } return rc; } /** * _ctl_diag_register_2 - wrapper for registering diag buffer support * @ioc: per adapter object * @diag_register: the diag_register struct passed in from user space * */ static long _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc, struct mpt2_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; unsigned long timeleft; u16 smid; u16 ioc_status; u8 issue_reset = 0; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) { printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n", ioc->name, __func__); rc = -EAGAIN; goto out; } buffer_type = diag_register->buffer_type; if (!_ctl_diag_capability(ioc, buffer_type)) { printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EPERM; } if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_REGISTERED) { printk(MPT2SAS_ERR_FMT "%s: already has a registered " "buffer for buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EINVAL; } if (diag_register->requested_buffer_size % 4) { printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size " "is not 4 byte aligned\n", ioc->name, __func__); return -EINVAL; } smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); rc = -EAGAIN; goto out; } rc = 0; ioc->ctl_cmds.status = MPT2_CMD_PENDING; memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); mpi_request = mpt2sas_base_get_msg_frame(ioc, smid); ioc->ctl_cmds.smid = smid; request_data = ioc->diag_buffer[buffer_type]; request_data_sz = diag_register->requested_buffer_size; ioc->unique_id[buffer_type] = diag_register->unique_id; ioc->diag_buffer_status[buffer_type] = 0; memcpy(ioc->product_specific[buffer_type], diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS); ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags; if (request_data) { request_data_dma = ioc->diag_buffer_dma[buffer_type]; if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) { pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[buffer_type], request_data, request_data_dma); request_data = NULL; } } if (request_data == NULL) { ioc->diag_buffer_sz[buffer_type] = 0; ioc->diag_buffer_dma[buffer_type] = 0; request_data = pci_alloc_consistent( ioc->pdev, request_data_sz, &request_data_dma); if (request_data == NULL) { printk(MPT2SAS_ERR_FMT "%s: failed allocating memory" " for diag buffers, requested size(%d)\n", ioc->name, __func__, request_data_sz); mpt2sas_base_free_smid(ioc, smid); return -ENOMEM; } ioc->diag_buffer[buffer_type] = request_data; ioc->diag_buffer_sz[buffer_type] = request_data_sz; ioc->diag_buffer_dma[buffer_type] = request_data_dma; } mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST; mpi_request->BufferType = diag_register->buffer_type; mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags); mpi_request->BufferAddress = cpu_to_le64(request_data_dma); mpi_request->BufferLength = cpu_to_le32(request_data_sz); mpi_request->VF_ID = 0; /* TODO */ mpi_request->VP_ID = 0; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), " "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data, (unsigned long long)request_data_dma, le32_to_cpu(mpi_request->BufferLength))); for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++) mpi_request->ProductSpecific[i] = cpu_to_le32(ioc->product_specific[buffer_type][i]); mpt2sas_base_put_smid_default(ioc, smid); init_completion(&ioc->ctl_cmds.done); timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done, MPT2_IOCTL_DEFAULT_TIMEOUT*HZ); if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) { printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name, __func__); _debug_dump_mf(mpi_request, sizeof(Mpi2DiagBufferPostRequest_t)/4); if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET)) issue_reset = 1; goto issue_host_reset; } /* process the completed Reply Message Frame */ if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) { printk(MPT2SAS_ERR_FMT "%s: no reply message\n", ioc->name, __func__); rc = -EFAULT; goto out; } mpi_reply = ioc->ctl_cmds.reply; ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { ioc->diag_buffer_status[buffer_type] |= MPT2_DIAG_BUFFER_IS_REGISTERED; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n", ioc->name, __func__)); } else { printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) " "log_info(0x%08x)\n", ioc->name, __func__, ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo)); rc = -EFAULT; } issue_host_reset: if (issue_reset) mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); out: if (rc && request_data) pci_free_consistent(ioc->pdev, request_data_sz, request_data, request_data_dma); ioc->ctl_cmds.status = MPT2_CMD_NOT_USED; return rc; } /** * mpt2sas_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 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register) { struct mpt2_diag_register diag_register; memset(&diag_register, 0, sizeof(struct mpt2_diag_register)); if (bits_to_register & 1) { printk(MPT2SAS_INFO_FMT "registering trace buffer support\n", ioc->name); diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE; /* register for 1MB buffers */ diag_register.requested_buffer_size = (1024 * 1024); diag_register.unique_id = 0x7075900; _ctl_diag_register_2(ioc, &diag_register); } if (bits_to_register & 2) { printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n", ioc->name); diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT; /* register for 2MB buffers */ diag_register.requested_buffer_size = 2 * (1024 * 1024); diag_register.unique_id = 0x7075901; _ctl_diag_register_2(ioc, &diag_register); } if (bits_to_register & 4) { printk(MPT2SAS_INFO_FMT "registering extended buffer support\n", ioc->name); diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED; /* register for 2MB buffers */ diag_register.requested_buffer_size = 2 * (1024 * 1024); diag_register.unique_id = 0x7075901; _ctl_diag_register_2(ioc, &diag_register); } } /** * _ctl_diag_register - application register with driver * @arg - user space buffer containing ioctl content * @state - NON_BLOCKING or BLOCKING * * 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(void __user *arg, enum block_state state) { struct mpt2_diag_register karg; struct MPT2SAS_ADAPTER *ioc; long rc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex)) return -EAGAIN; else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) return -ERESTARTSYS; rc = _ctl_diag_register_2(ioc, &karg); mutex_unlock(&ioc->ctl_cmds.mutex); return rc; } /** * _ctl_diag_unregister - application unregister with driver * @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(void __user *arg) { struct mpt2_diag_unregister karg; struct MPT2SAS_ADAPTER *ioc; void *request_data; dma_addr_t request_data_dma; u32 request_data_sz; u8 buffer_type; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); buffer_type = karg.unique_id & 0x000000ff; if (!_ctl_diag_capability(ioc, buffer_type)) { printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EPERM; } if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) { printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not " "registered\n", ioc->name, __func__, buffer_type); return -EINVAL; } if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED) == 0) { printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been " "released\n", ioc->name, __func__, buffer_type); return -EINVAL; } if (karg.unique_id != ioc->unique_id[buffer_type]) { printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not " "registered\n", ioc->name, __func__, karg.unique_id); return -EINVAL; } request_data = ioc->diag_buffer[buffer_type]; if (!request_data) { printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -ENOMEM; } request_data_sz = ioc->diag_buffer_sz[buffer_type]; request_data_dma = ioc->diag_buffer_dma[buffer_type]; pci_free_consistent(ioc->pdev, request_data_sz, request_data, request_data_dma); ioc->diag_buffer[buffer_type] = NULL; ioc->diag_buffer_status[buffer_type] = 0; return 0; } /** * _ctl_diag_query - query relevant info associated with diag buffers * @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(void __user *arg) { struct mpt2_diag_query karg; struct MPT2SAS_ADAPTER *ioc; void *request_data; int i; u8 buffer_type; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); karg.application_flags = 0; buffer_type = karg.buffer_type; if (!_ctl_diag_capability(ioc, buffer_type)) { printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EPERM; } if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) { printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not " "registered\n", ioc->name, __func__, buffer_type); return -EINVAL; } if (karg.unique_id & 0xffffff00) { if (karg.unique_id != ioc->unique_id[buffer_type]) { printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not " "registered\n", ioc->name, __func__, karg.unique_id); return -EINVAL; } } request_data = ioc->diag_buffer[buffer_type]; if (!request_data) { printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -ENOMEM; } if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED) karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED | MPT2_APP_FLAGS_BUFFER_VALID); else karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED | MPT2_APP_FLAGS_BUFFER_VALID | MPT2_APP_FLAGS_FW_BUFFER_ACCESS); for (i = 0; i < MPT2_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 mpt2_diag_query))) { printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query " "data @ %p\n", ioc->name, __func__, arg); return -EFAULT; } return 0; } /** * _ctl_send_release - Diag Release Message * @ioc: per adapter object * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED * @issue_reset - specifies whether host reset is required. * */ static int _ctl_send_release(struct MPT2SAS_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; unsigned long timeleft; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); rc = 0; *issue_reset = 0; ioc_state = mpt2sas_base_get_iocstate(ioc, 1); if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "skipping due to FAULT state\n", ioc->name, __func__)); rc = -EAGAIN; goto out; } if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) { printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n", ioc->name, __func__); rc = -EAGAIN; goto out; } smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); rc = -EAGAIN; goto out; } ioc->ctl_cmds.status = MPT2_CMD_PENDING; memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); mpi_request = mpt2sas_base_get_msg_frame(ioc, smid); ioc->ctl_cmds.smid = smid; mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE; mpi_request->BufferType = buffer_type; mpi_request->VF_ID = 0; /* TODO */ mpi_request->VP_ID = 0; mpt2sas_base_put_smid_default(ioc, smid); init_completion(&ioc->ctl_cmds.done); timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done, MPT2_IOCTL_DEFAULT_TIMEOUT*HZ); if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) { printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name, __func__); _debug_dump_mf(mpi_request, sizeof(Mpi2DiagReleaseRequest_t)/4); if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET)) *issue_reset = 1; rc = -EFAULT; goto out; } /* process the completed Reply Message Frame */ if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) { printk(MPT2SAS_ERR_FMT "%s: no reply message\n", ioc->name, __func__); rc = -EFAULT; goto out; } mpi_reply = ioc->ctl_cmds.reply; ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { ioc->diag_buffer_status[buffer_type] |= MPT2_DIAG_BUFFER_IS_RELEASED; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n", ioc->name, __func__)); } else { printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) " "log_info(0x%08x)\n", ioc->name, __func__, ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo)); rc = -EFAULT; } out: ioc->ctl_cmds.status = MPT2_CMD_NOT_USED; return rc; } /** * _ctl_diag_release - request to send Diag Release Message to firmware * @arg - user space buffer containing ioctl content * @state - NON_BLOCKING or BLOCKING * * This allows ownership of the specified buffer to returned to the driver, * allowing an application to read the buffer without fear that firmware is * overwritting information in the buffer. */ static long _ctl_diag_release(void __user *arg, enum block_state state) { struct mpt2_diag_release karg; struct MPT2SAS_ADAPTER *ioc; void *request_data; int rc; u8 buffer_type; u8 issue_reset = 0; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); buffer_type = karg.unique_id & 0x000000ff; if (!_ctl_diag_capability(ioc, buffer_type)) { printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EPERM; } if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) { printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not " "registered\n", ioc->name, __func__, buffer_type); return -EINVAL; } if (karg.unique_id != ioc->unique_id[buffer_type]) { printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not " "registered\n", ioc->name, __func__, karg.unique_id); return -EINVAL; } if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED) { printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) " "is already released\n", ioc->name, __func__, buffer_type); return 0; } request_data = ioc->diag_buffer[buffer_type]; if (!request_data) { printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -ENOMEM; } /* buffers were released by due to host reset */ if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_DIAG_RESET)) { ioc->diag_buffer_status[buffer_type] |= MPT2_DIAG_BUFFER_IS_RELEASED; ioc->diag_buffer_status[buffer_type] &= ~MPT2_DIAG_BUFFER_IS_DIAG_RESET; printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) " "was released due to host reset\n", ioc->name, __func__, buffer_type); return 0; } if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex)) return -EAGAIN; else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) return -ERESTARTSYS; rc = _ctl_send_release(ioc, buffer_type, &issue_reset); if (issue_reset) mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); mutex_unlock(&ioc->ctl_cmds.mutex); return rc; } /** * _ctl_diag_read_buffer - request for copy of the diag buffer * @arg - user space buffer containing ioctl content * @state - NON_BLOCKING or BLOCKING */ static long _ctl_diag_read_buffer(void __user *arg, enum block_state state) { struct mpt2_diag_read_buffer karg; struct mpt2_diag_read_buffer __user *uarg = arg; struct MPT2SAS_ADAPTER *ioc; void *request_data, *diag_data; Mpi2DiagBufferPostRequest_t *mpi_request; Mpi2DiagBufferPostReply_t *mpi_reply; int rc, i; u8 buffer_type; unsigned long timeleft, request_size, copy_size; u16 smid; u16 ioc_status; u8 issue_reset = 0; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, __func__)); buffer_type = karg.unique_id & 0x000000ff; if (!_ctl_diag_capability(ioc, buffer_type)) { printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -EPERM; } if (karg.unique_id != ioc->unique_id[buffer_type]) { printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not " "registered\n", ioc->name, __func__, karg.unique_id); return -EINVAL; } request_data = ioc->diag_buffer[buffer_type]; if (!request_data) { printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type); return -ENOMEM; } request_size = ioc->diag_buffer_sz[buffer_type]; if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) { printk(MPT2SAS_ERR_FMT "%s: either the starting_offset " "or bytes_to_read are not 4 byte aligned\n", ioc->name, __func__); return -EINVAL; } if (karg.starting_offset > request_size) return -EINVAL; diag_data = (void *)(request_data + karg.starting_offset); dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), " "offset(%d), sz(%d)\n", ioc->name, __func__, diag_data, karg.starting_offset, karg.bytes_to_read)); /* Truncate data on requests that are too large */ if ((diag_data + karg.bytes_to_read < diag_data) || (diag_data + karg.bytes_to_read > request_data + request_size)) copy_size = request_size - karg.starting_offset; else copy_size = karg.bytes_to_read; if (copy_to_user((void __user *)uarg->diagnostic_data, diag_data, copy_size)) { printk(MPT2SAS_ERR_FMT "%s: Unable to write " "mpt_diag_read_buffer_t data @ %p\n", ioc->name, __func__, diag_data); return -EFAULT; } if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0) return 0; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister " "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type)); if ((ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED) == 0) { dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: " "buffer_type(0x%02x) is still registered\n", ioc->name, __func__, buffer_type)); return 0; } /* Get a free request frame and save the message context. */ if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex)) return -EAGAIN; else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) return -ERESTARTSYS; if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) { printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n", ioc->name, __func__); rc = -EAGAIN; goto out; } smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx); if (!smid) { printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n", ioc->name, __func__); rc = -EAGAIN; goto out; } rc = 0; ioc->ctl_cmds.status = MPT2_CMD_PENDING; memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); mpi_request = mpt2sas_base_get_msg_frame(ioc, smid); ioc->ctl_cmds.smid = smid; mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST; mpi_request->BufferType = buffer_type; mpi_request->BufferLength = cpu_to_le32(ioc->diag_buffer_sz[buffer_type]); mpi_request->BufferAddress = cpu_to_le64(ioc->diag_buffer_dma[buffer_type]); for (i = 0; i < MPT2_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; mpt2sas_base_put_smid_default(ioc, smid); init_completion(&ioc->ctl_cmds.done); timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done, MPT2_IOCTL_DEFAULT_TIMEOUT*HZ); if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) { printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name, __func__); _debug_dump_mf(mpi_request, sizeof(Mpi2DiagBufferPostRequest_t)/4); if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET)) issue_reset = 1; goto issue_host_reset; } /* process the completed Reply Message Frame */ if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) { printk(MPT2SAS_ERR_FMT "%s: no reply message\n", ioc->name, __func__); rc = -EFAULT; goto out; } mpi_reply = ioc->ctl_cmds.reply; ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { ioc->diag_buffer_status[buffer_type] |= MPT2_DIAG_BUFFER_IS_REGISTERED; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n", ioc->name, __func__)); } else { printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) " "log_info(0x%08x)\n", ioc->name, __func__, ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo)); rc = -EFAULT; } issue_host_reset: if (issue_reset) mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, FORCE_BIG_HAMMER); out: ioc->ctl_cmds.status = MPT2_CMD_NOT_USED; mutex_unlock(&ioc->ctl_cmds.mutex); return rc; } /** * _ctl_ioctl_main - main ioctl entry point * @file - (struct file) * @cmd - ioctl opcode * @arg - */ static long _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg) { enum block_state state; long ret = -EINVAL; state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING; switch (cmd) { case MPT2IOCINFO: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo)) ret = _ctl_getiocinfo(arg); break; case MPT2COMMAND: { struct mpt2_ioctl_command karg; struct mpt2_ioctl_command __user *uarg; struct MPT2SAS_ADAPTER *ioc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; if (ioc->shost_recovery || ioc->pci_error_recovery) return -EAGAIN; if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) { uarg = arg; ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state); } break; } case MPT2EVENTQUERY: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery)) ret = _ctl_eventquery(arg); break; case MPT2EVENTENABLE: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable)) ret = _ctl_eventenable(arg); break; case MPT2EVENTREPORT: ret = _ctl_eventreport(arg); break; case MPT2HARDRESET: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset)) ret = _ctl_do_reset(arg); break; case MPT2BTDHMAPPING: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping)) ret = _ctl_btdh_mapping(arg); break; case MPT2DIAGREGISTER: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register)) ret = _ctl_diag_register(arg, state); break; case MPT2DIAGUNREGISTER: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister)) ret = _ctl_diag_unregister(arg); break; case MPT2DIAGQUERY: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query)) ret = _ctl_diag_query(arg); break; case MPT2DIAGRELEASE: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release)) ret = _ctl_diag_release(arg, state); break; case MPT2DIAGREADBUFFER: if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer)) ret = _ctl_diag_read_buffer(arg, state); break; default: { struct mpt2_ioctl_command karg; struct MPT2SAS_ADAPTER *ioc; if (copy_from_user(&karg, arg, sizeof(karg))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd)); break; } } return ret; } /** * _ctl_ioctl - 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; mutex_lock(&_ctl_mutex); ret = _ctl_ioctl_main(file, cmd, (void __user *)arg); mutex_unlock(&_ctl_mutex); return ret; } #ifdef CONFIG_COMPAT /** * _ctl_compat_mpt_command - convert 32bit pointers to 64bit. * @file - (struct file) * @cmd - ioctl opcode * @arg - (struct mpt2_ioctl_command32) * * MPT2COMMAND32 - Handle 32bit applications running on 64bit os. */ static long _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg) { struct mpt2_ioctl_command32 karg32; struct mpt2_ioctl_command32 __user *uarg; struct mpt2_ioctl_command karg; struct MPT2SAS_ADAPTER *ioc; enum block_state state; if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32)) return -EINVAL; uarg = (struct mpt2_ioctl_command32 __user *) arg; if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) { printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); return -EFAULT; } if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc) return -ENODEV; if (ioc->shost_recovery || ioc->pci_error_recovery) return -EAGAIN; memset(&karg, 0, sizeof(struct mpt2_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); state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING; return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state); } /** * _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; mutex_lock(&_ctl_mutex); if (cmd == MPT2COMMAND32) ret = _ctl_compat_mpt_command(file, cmd, arg); else ret = _ctl_ioctl_main(file, cmd, (void __user *)arg); mutex_unlock(&_ctl_mutex); return ret; } #endif /* scsi host attributes */ /** * _ctl_version_fw_show - firmware version * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_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(version_fw, S_IRUGO, _ctl_version_fw_show, NULL); /** * _ctl_version_bios_show - bios version * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_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(version_bios, S_IRUGO, _ctl_version_bios_show, NULL); /** * _ctl_version_mpi_show - MPI (message passing interface) version * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%03x.%02x\n", ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8); } static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL); /** * _ctl_version_product_show - product name * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_product_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName); } static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL); /** * _ctl_version_nvdata_persistent_show - ndvata persistent version * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_nvdata_persistent_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%08xh\n", le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word)); } static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO, _ctl_version_nvdata_persistent_show, NULL); /** * _ctl_version_nvdata_default_show - nvdata default version * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%08xh\n", le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word)); } static DEVICE_ATTR(version_nvdata_default, S_IRUGO, _ctl_version_nvdata_default_show, NULL); /** * _ctl_board_name_show - board name * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_board_name_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName); } static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL); /** * _ctl_board_assembly_show - board assembly name * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly); } static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL); /** * _ctl_board_tracer_show - board tracer number * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber); } static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL); /** * _ctl_io_delay_show - io missing delay * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is for firmware implemention for deboucing device * removal events. * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay); } static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL); /** * _ctl_device_delay_show - device missing delay * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is for firmware implemention for deboucing device * removal events. * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay); } static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL); /** * _ctl_fw_queue_depth_show - global credits * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is firmware queue depth limit * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit); } static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL); /** * _ctl_sas_address_show - sas address * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is the controller sas address * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "0x%016llx\n", (unsigned long long)ioc->sas_hba.sas_address); } static DEVICE_ATTR(host_sas_address, S_IRUGO, _ctl_host_sas_address_show, NULL); /** * _ctl_logging_level_show - logging level * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read/write' shost attribute. */ static ssize_t _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level); } static ssize_t _ctl_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 MPT2SAS_ADAPTER *ioc = shost_priv(shost); int val = 0; if (sscanf(buf, "%x", &val) != 1) return -EINVAL; ioc->logging_level = val; printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name, ioc->logging_level); return strlen(buf); } static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show, _ctl_logging_level_store); /* device attributes */ /* * _ctl_fwfault_debug_show - show/store fwfault_debug * @cdev - pointer to embedded class device * @buf - the buffer returned * * mpt2sas_fwfault_debug is command line option * A sysfs 'read/write' shost attribute. */ static ssize_t _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug); } static ssize_t _ctl_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 MPT2SAS_ADAPTER *ioc = shost_priv(shost); int val = 0; if (sscanf(buf, "%d", &val) != 1) return -EINVAL; ioc->fwfault_debug = val; printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name, ioc->fwfault_debug); return strlen(buf); } static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR, _ctl_fwfault_debug_show, _ctl_fwfault_debug_store); /** * _ctl_ioc_reset_count_show - ioc reset count * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is firmware queue depth limit * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count); } static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL); struct DIAG_BUFFER_START { __le32 Size; __le32 DiagVersion; u8 BufferType; u8 Reserved[3]; __le32 Reserved1; __le32 Reserved2; __le32 Reserved3; }; /** * _ctl_host_trace_buffer_size_show - host buffer size (trace only) * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_host_trace_buffer_size_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); u32 size = 0; struct DIAG_BUFFER_START *request_data; if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) { printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not " "registered\n", ioc->name, __func__); return 0; } if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) { printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not " "registered\n", ioc->name, __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->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(host_trace_buffer_size, S_IRUGO, _ctl_host_trace_buffer_size_show, NULL); /** * _ctl_host_trace_buffer_show - firmware ring buffer (trace only) * @cdev - pointer to embedded class device * @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 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); void *request_data; u32 size; if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) { printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not " "registered\n", ioc->name, __func__); return 0; } if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) { printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not " "registered\n", ioc->name, __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 : size; request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset; memcpy(buf, request_data, size); return size; } static ssize_t _ctl_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 MPT2SAS_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(host_trace_buffer, S_IRUGO | S_IWUSR, _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store); /*****************************************/ /** * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only) * @cdev - pointer to embedded class device * @buf - the buffer returned * * A sysfs 'read/write' shost attribute. * * This is a mechnism to post/release host_trace_buffers */ static ssize_t _ctl_host_trace_buffer_enable_show(struct device *cdev, struct device_attribute *attr, char *buf) { struct Scsi_Host *shost = class_to_shost(cdev); struct MPT2SAS_ADAPTER *ioc = shost_priv(shost); if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) || ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)) return snprintf(buf, PAGE_SIZE, "off\n"); else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_RELEASED)) return snprintf(buf, PAGE_SIZE, "release\n"); else return snprintf(buf, PAGE_SIZE, "post\n"); } static ssize_t _ctl_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 MPT2SAS_ADAPTER *ioc = shost_priv(shost); char str[10] = ""; struct mpt2_diag_register diag_register; u8 issue_reset = 0; if (sscanf(buf, "%s", 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] & MPT2_DIAG_BUFFER_IS_REGISTERED) && ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_RELEASED) == 0)) goto out; memset(&diag_register, 0, sizeof(struct mpt2_diag_register)); printk(MPT2SAS_INFO_FMT "posting host trace buffers\n", ioc->name); diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE; diag_register.requested_buffer_size = (1024 * 1024); diag_register.unique_id = 0x7075900; ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0; _ctl_diag_register_2(ioc, &diag_register); } else if (!strcmp(str, "release")) { /* exit out if host buffers are already released */ if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) goto out; if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) goto out; if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & MPT2_DIAG_BUFFER_IS_RELEASED)) goto out; printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n", ioc->name); _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset); } out: return strlen(buf); } static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR, _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store); struct device_attribute *mpt2sas_host_attrs[] = { &dev_attr_version_fw, &dev_attr_version_bios, &dev_attr_version_mpi, &dev_attr_version_product, &dev_attr_version_nvdata_persistent, &dev_attr_version_nvdata_default, &dev_attr_board_name, &dev_attr_board_assembly, &dev_attr_board_tracer, &dev_attr_io_delay, &dev_attr_device_delay, &dev_attr_logging_level, &dev_attr_fwfault_debug, &dev_attr_fw_queue_depth, &dev_attr_host_sas_address, &dev_attr_ioc_reset_count, &dev_attr_host_trace_buffer_size, &dev_attr_host_trace_buffer, &dev_attr_host_trace_buffer_enable, NULL, }; /** * _ctl_device_sas_address_show - sas address * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is the sas address for the target * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); struct MPT2SAS_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(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL); /** * _ctl_device_handle_show - device handle * @cdev - pointer to embedded class device * @buf - the buffer returned * * This is the firmware assigned device handle * * A sysfs 'read-only' shost attribute. */ static ssize_t _ctl_device_handle_show(struct device *dev, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(dev); struct MPT2SAS_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(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL); struct device_attribute *mpt2sas_dev_attrs[] = { &dev_attr_sas_address, &dev_attr_sas_device_handle, NULL, }; static const struct file_operations ctl_fops = { .owner = THIS_MODULE, .unlocked_ioctl = _ctl_ioctl, .release = _ctl_release, .poll = _ctl_poll, .fasync = _ctl_fasync, #ifdef CONFIG_COMPAT .compat_ioctl = _ctl_ioctl_compat, #endif .llseek = noop_llseek, }; static struct miscdevice ctl_dev = { .minor = MPT2SAS_MINOR, .name = MPT2SAS_DEV_NAME, .fops = &ctl_fops, }; /** * mpt2sas_ctl_init - main entry point for ctl. * */ void mpt2sas_ctl_init(void) { async_queue = NULL; if (misc_register(&ctl_dev) < 0) printk(KERN_ERR "%s can't register misc device [minor=%d]\n", MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR); init_waitqueue_head(&ctl_poll_wait); } /** * mpt2sas_ctl_exit - exit point for ctl * */ void mpt2sas_ctl_exit(void) { struct MPT2SAS_ADAPTER *ioc; int i; list_for_each_entry(ioc, &mpt2sas_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; pci_free_consistent(ioc->pdev, 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); } misc_deregister(&ctl_dev); }