diff options
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_ctl.c')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_ctl.c | 2516 |
1 files changed, 2516 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c new file mode 100644 index 000000000000..4fbe3f83319b --- /dev/null +++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c @@ -0,0 +1,2516 @@ +/* + * Management Module Support for MPT (Message Passing Technology) based + * controllers + * + * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c + * Copyright (C) 2007-2008 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 <linux/version.h> +#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/smp_lock.h> +#include <linux/compat.h> +#include <linux/poll.h> + +#include <linux/io.h> +#include <linux/uaccess.h> + +#include "mpt2sas_base.h" +#include "mpt2sas_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, +}; + +#ifdef CONFIG_SCSI_MPT2SAS_LOGGING +/** + * _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 helpfull 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_DEBUG_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_DEBUG_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; + if (scsi_reply->SCSIState || scsi_reply->SCSIStatus) + printk(MPT2SAS_DEBUG_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 + * @VF_ID: virtual function id + * @reply: reply message frame(lower 32bit addr) + * Context: none. + * + * The callback handler when using ioc->ctl_cb_idx. + * + * Return nothing. + */ +void +mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply) +{ + MPI2DefaultReply_t *mpi_reply; + + if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED) + return; + if (ioc->ctl_cmds.smid != smid) + return; + 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; + } +#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); +} + +/** + * _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 + * @VF_ID: virtual function id + * @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 nothing. + */ +void +mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, 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); +} + +/** + * _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, &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) +{ + switch (reset_phase) { + case MPT2_IOC_PRE_RESET: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: " + "MPT2_IOC_PRE_RESET\n", ioc->name, __func__)); + break; + case MPT2_IOC_AFTER_RESET: + dtmprintk(ioc, printk(MPT2SAS_DEBUG_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_DEBUG_FMT "%s: " + "MPT2_IOC_DONE_RESET\n", ioc->name, __func__)); + 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, &ioc_list, list) { + if (ioc->aen_event_read_flag) + return POLLIN | POLLRDNORM; + } + return 0; +} + +/** + * _ctl_do_task_abort - assign an active smid to the abort_task + * @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_do_task_abort(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; + + 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->request_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_DEBUG_FMT "ABORT_TASK: " + "DevHandle(0x%04x), lun(%d), no active mid!!\n", ioc->name, + 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 = MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK; + 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_DEBUG_FMT "ABORT_TASK: " + "DevHandle(0x%04x), lun(%d), smid(%d)\n", ioc->name, + tm_request->DevHandle, lun, 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; + MPI2DefaultReply_t *mpi_reply; + u32 ioc_state; + u16 ioc_status; + u16 smid; + unsigned long timeout, timeleft; + u8 issue_reset; + u32 sz; + void *psge; + void *priv_sense = NULL; + 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__); + + 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__); + ret = -EAGAIN; + goto out; + } + + ret = 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; + data_out_sz = karg.data_out_size; + data_in_sz = karg.data_in_size; + + /* 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; + mpt2sas_base_free_smid(ioc, smid); + goto out; + } + + if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || + mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) { + if (!mpi_request->FunctionDependent1 || + mpi_request->FunctionDependent1 > + cpu_to_le16(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 *)mpi_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 *)mpi_request; + scsiio_request->SenseBufferLowAddress = + (u32)mpt2sas_base_get_sense_buffer_dma(ioc, smid); + priv_sense = mpt2sas_base_get_sense_buffer(ioc, smid); + memset(priv_sense, 0, SCSI_SENSE_BUFFERSIZE); + mpt2sas_base_put_smid_scsi_io(ioc, smid, 0, + le16_to_cpu(mpi_request->FunctionDependent1)); + break; + } + case MPI2_FUNCTION_SCSI_TASK_MGMT: + { + Mpi2SCSITaskManagementRequest_t *tm_request = + (Mpi2SCSITaskManagementRequest_t *)mpi_request; + + if (tm_request->TaskType == + MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) { + if (_ctl_do_task_abort(ioc, &karg, tm_request)) + goto out; + } + + mutex_lock(&ioc->tm_cmds.mutex); + mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu( + tm_request->DevHandle)); + mpt2sas_base_put_smid_hi_priority(ioc, smid, + mpi_request->VF_ID); + 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, mpi_request->VF_ID); + 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, mpi_request->VF_ID); + break; + } + default: + mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID); + break; + } + + if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT) + timeout = MPT2_IOCTL_DEFAULT_TIMEOUT; + else + timeout = karg.timeout; + 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; + mutex_unlock(&ioc->tm_cmds.mutex); + 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_DEBUG_FMT "TASK_MGMT: " + "IOCStatus(0x%04x), IOCLogInfo(0x%08x), " + "TerminationCount(0x%08x)\n", ioc->name, + tm_reply->IOCStatus, tm_reply->IOCLogInfo, + 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, priv_sense, sz)) { + printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, + __LINE__, __func__); + ret = -ENODATA; + goto out; + } + } + + issue_host_reset: + if (issue_reset) { + 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, + mpi_request->FunctionDependent1); + mutex_lock(&ioc->tm_cmds.mutex); + mpt2sas_scsih_issue_tm(ioc, + mpi_request->FunctionDependent1, 0, + MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10); + ioc->tm_cmds.status = MPT2_CMD_NOT_USED; + mutex_unlock(&ioc->tm_cmds.mutex); + } 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); + + 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_DEBUG_FMT "%s: enter\n", ioc->name, + __func__)); + + memset(&karg, 0 , sizeof(karg)); + 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; + strncpy(karg.driver_version, MPT2SAS_DRIVER_VERSION, + MPT2_IOCTL_VERSION_LENGTH); + karg.driver_version[MPT2_IOCTL_VERSION_LENGTH - 1] = '\0'; + 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_DEBUG_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_DEBUG_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_DEBUG_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_DEBUG_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_DEBUG_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 or SNAPSHOT + * + * 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; + } + + return rc; +} + +/** + * _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; + 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; + + 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_DEBUG_FMT "%s\n", ioc->name, + __func__)); + + 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) { + printk(MPT2SAS_ERR_FMT "%s: already has a registered " + "buffer for buffer_type(0x%02x)\n", ioc->name, __func__, + buffer_type); + return -EINVAL; + } + + if (karg.requested_buffer_size % 4) { + printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size " + "is not 4 byte aligned\n", ioc->name, __func__); + return -EINVAL; + } + + 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; + + request_data = ioc->diag_buffer[buffer_type]; + request_data_sz = karg.requested_buffer_size; + ioc->unique_id[buffer_type] = karg.unique_id; + ioc->diag_buffer_status[buffer_type] = 0; + memcpy(ioc->product_specific[buffer_type], karg.product_specific, + MPT2_PRODUCT_SPECIFIC_DWORDS); + ioc->diagnostic_flags[buffer_type] = karg.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 = karg.buffer_type; + mpi_request->Flags = cpu_to_le32(karg.diagnostic_flags); + mpi_request->BufferAddress = cpu_to_le64(request_data_dma); + mpi_request->BufferLength = cpu_to_le32(request_data_sz); + + dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(0x%p), " + "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data, + (unsigned long long)request_data_dma, 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, mpi_request->VF_ID); + 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_DEBUG_FMT "%s: success\n", + ioc->name, __func__)); + } else { + printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) " + "log_info(0x%08x)\n", ioc->name, __func__, + ioc_status, 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; + 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_DEBUG_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_DEBUG_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_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; + Mpi2DiagReleaseRequest_t *mpi_request; + Mpi2DiagReleaseReply_t *mpi_reply; + u8 buffer_type; + unsigned long timeleft; + 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_DEBUG_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; + } + + 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_RELEASE; + mpi_request->BufferType = buffer_type; + + mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID); + 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; + 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_RELEASED; + dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n", + ioc->name, __func__)); + } else { + printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) " + "log_info(0x%08x)\n", ioc->name, __func__, + ioc_status, 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_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; + 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_DEBUG_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; + } + + 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; + } + + diag_data = (void *)(request_data + karg.starting_offset); + dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(%p), " + "offset(%d), sz(%d)\n", ioc->name, __func__, + diag_data, karg.starting_offset, karg.bytes_to_read)); + + if (copy_to_user((void __user *)uarg->diagnostic_data, + diag_data, karg.bytes_to_read)) { + 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_DEBUG_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_DEBUG_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]); + + mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID); + 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_DEBUG_FMT "%s: success\n", + ioc->name, __func__)); + } else { + printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) " + "log_info(0x%08x)\n", ioc->name, __func__, + ioc_status, 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; + unsigned long flags; + + 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; + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->shost_recovery) { + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, + flags); + return -EAGAIN; + } + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + + 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_DEBUG_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; + lock_kernel(); + ret = _ctl_ioctl_main(file, cmd, (void __user *)arg); + unlock_kernel(); + 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; + unsigned long flags; + + 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; + + spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags); + if (ioc->shost_recovery) { + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, + flags); + return -EAGAIN; + } + spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags); + + 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; + memcpy(&karg.reply_frame_buf_ptr, &karg32.reply_frame_buf_ptr, + sizeof(uint32_t)); + memcpy(&karg.data_in_buf_ptr, &karg32.data_in_buf_ptr, + sizeof(uint32_t)); + memcpy(&karg.data_out_buf_ptr, &karg32.data_out_buf_ptr, + sizeof(uint32_t)); + memcpy(&karg.sense_data_ptr, &karg32.sense_data_ptr, + sizeof(uint32_t)); + 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; + lock_kernel(); + if (cmd == MPT2COMMAND32) + ret = _ctl_compat_mpt_command(file, cmd, arg); + else + ret = _ctl_ioctl_main(file, cmd, (void __user *)arg); + unlock_kernel(); + 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, "%02xh\n", + le16_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, "%02xh\n", + le16_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); + +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_fw_queue_depth, + &dev_attr_host_sas_address, + NULL, +}; + +/* device attributes */ + +/** + * _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 +}; + +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, &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); +} + |