| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Driver for Broadcom MPI3 Storage Controllers |
| * |
| * Copyright (C) 2017-2022 Broadcom Inc. |
| * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com) |
| * |
| */ |
| |
| #include "mpi3mr.h" |
| |
| /* global driver scop variables */ |
| LIST_HEAD(mrioc_list); |
| DEFINE_SPINLOCK(mrioc_list_lock); |
| static int mrioc_ids; |
| static int warn_non_secure_ctlr; |
| atomic64_t event_counter; |
| |
| MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC); |
| MODULE_LICENSE(MPI3MR_DRIVER_LICENSE); |
| MODULE_VERSION(MPI3MR_DRIVER_VERSION); |
| |
| /* Module parameters*/ |
| int prot_mask = -1; |
| module_param(prot_mask, int, 0); |
| MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07"); |
| |
| static int prot_guard_mask = 3; |
| module_param(prot_guard_mask, int, 0); |
| MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3"); |
| static int logging_level; |
| module_param(logging_level, int, 0); |
| MODULE_PARM_DESC(logging_level, |
| " bits for enabling additional logging info (default=0)"); |
| |
| /* Forward declarations*/ |
| static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event, |
| struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx); |
| |
| #define MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION (0xFFFF) |
| |
| /** |
| * mpi3mr_host_tag_for_scmd - Get host tag for a scmd |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI command reference |
| * |
| * Calculate the host tag based on block tag for a given scmd. |
| * |
| * Return: Valid host tag or MPI3MR_HOSTTAG_INVALID. |
| */ |
| static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd) |
| { |
| struct scmd_priv *priv = NULL; |
| u32 unique_tag; |
| u16 host_tag, hw_queue; |
| |
| unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); |
| |
| hw_queue = blk_mq_unique_tag_to_hwq(unique_tag); |
| if (hw_queue >= mrioc->num_op_reply_q) |
| return MPI3MR_HOSTTAG_INVALID; |
| host_tag = blk_mq_unique_tag_to_tag(unique_tag); |
| |
| if (WARN_ON(host_tag >= mrioc->max_host_ios)) |
| return MPI3MR_HOSTTAG_INVALID; |
| |
| priv = scsi_cmd_priv(scmd); |
| /*host_tag 0 is invalid hence incrementing by 1*/ |
| priv->host_tag = host_tag + 1; |
| priv->scmd = scmd; |
| priv->in_lld_scope = 1; |
| priv->req_q_idx = hw_queue; |
| priv->meta_chain_idx = -1; |
| priv->chain_idx = -1; |
| priv->meta_sg_valid = 0; |
| return priv->host_tag; |
| } |
| |
| /** |
| * mpi3mr_scmd_from_host_tag - Get SCSI command from host tag |
| * @mrioc: Adapter instance reference |
| * @host_tag: Host tag |
| * @qidx: Operational queue index |
| * |
| * Identify the block tag from the host tag and queue index and |
| * retrieve associated scsi command using scsi_host_find_tag(). |
| * |
| * Return: SCSI command reference or NULL. |
| */ |
| static struct scsi_cmnd *mpi3mr_scmd_from_host_tag( |
| struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx) |
| { |
| struct scsi_cmnd *scmd = NULL; |
| struct scmd_priv *priv = NULL; |
| u32 unique_tag = host_tag - 1; |
| |
| if (WARN_ON(host_tag > mrioc->max_host_ios)) |
| goto out; |
| |
| unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS); |
| |
| scmd = scsi_host_find_tag(mrioc->shost, unique_tag); |
| if (scmd) { |
| priv = scsi_cmd_priv(scmd); |
| if (!priv->in_lld_scope) |
| scmd = NULL; |
| } |
| out: |
| return scmd; |
| } |
| |
| /** |
| * mpi3mr_clear_scmd_priv - Cleanup SCSI command private date |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI command reference |
| * |
| * Invalidate the SCSI command private data to mark the command |
| * is not in LLD scope anymore. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd) |
| { |
| struct scmd_priv *priv = NULL; |
| |
| priv = scsi_cmd_priv(scmd); |
| |
| if (WARN_ON(priv->in_lld_scope == 0)) |
| return; |
| priv->host_tag = MPI3MR_HOSTTAG_INVALID; |
| priv->req_q_idx = 0xFFFF; |
| priv->scmd = NULL; |
| priv->in_lld_scope = 0; |
| priv->meta_sg_valid = 0; |
| if (priv->chain_idx >= 0) { |
| clear_bit(priv->chain_idx, mrioc->chain_bitmap); |
| priv->chain_idx = -1; |
| } |
| if (priv->meta_chain_idx >= 0) { |
| clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap); |
| priv->meta_chain_idx = -1; |
| } |
| } |
| |
| static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle, |
| struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc); |
| static void mpi3mr_fwevt_worker(struct work_struct *work); |
| |
| /** |
| * mpi3mr_fwevt_free - firmware event memory dealloctor |
| * @r: k reference pointer of the firmware event |
| * |
| * Free firmware event memory when no reference. |
| */ |
| static void mpi3mr_fwevt_free(struct kref *r) |
| { |
| kfree(container_of(r, struct mpi3mr_fwevt, ref_count)); |
| } |
| |
| /** |
| * mpi3mr_fwevt_get - k reference incrementor |
| * @fwevt: Firmware event reference |
| * |
| * Increment firmware event reference count. |
| */ |
| static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt) |
| { |
| kref_get(&fwevt->ref_count); |
| } |
| |
| /** |
| * mpi3mr_fwevt_put - k reference decrementor |
| * @fwevt: Firmware event reference |
| * |
| * decrement firmware event reference count. |
| */ |
| static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt) |
| { |
| kref_put(&fwevt->ref_count, mpi3mr_fwevt_free); |
| } |
| |
| /** |
| * mpi3mr_alloc_fwevt - Allocate firmware event |
| * @len: length of firmware event data to allocate |
| * |
| * Allocate firmware event with required length and initialize |
| * the reference counter. |
| * |
| * Return: firmware event reference. |
| */ |
| static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len) |
| { |
| struct mpi3mr_fwevt *fwevt; |
| |
| fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC); |
| if (!fwevt) |
| return NULL; |
| |
| kref_init(&fwevt->ref_count); |
| return fwevt; |
| } |
| |
| /** |
| * mpi3mr_fwevt_add_to_list - Add firmware event to the list |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Add the given firmware event to the firmware event list. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| unsigned long flags; |
| |
| if (!mrioc->fwevt_worker_thread) |
| return; |
| |
| spin_lock_irqsave(&mrioc->fwevt_lock, flags); |
| /* get fwevt reference count while adding it to fwevt_list */ |
| mpi3mr_fwevt_get(fwevt); |
| INIT_LIST_HEAD(&fwevt->list); |
| list_add_tail(&fwevt->list, &mrioc->fwevt_list); |
| INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker); |
| /* get fwevt reference count while enqueueing it to worker queue */ |
| mpi3mr_fwevt_get(fwevt); |
| queue_work(mrioc->fwevt_worker_thread, &fwevt->work); |
| spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); |
| } |
| |
| /** |
| * mpi3mr_fwevt_del_from_list - Delete firmware event from list |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Delete the given firmware event from the firmware event list. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mrioc->fwevt_lock, flags); |
| if (!list_empty(&fwevt->list)) { |
| list_del_init(&fwevt->list); |
| /* |
| * Put fwevt reference count after |
| * removing it from fwevt_list |
| */ |
| mpi3mr_fwevt_put(fwevt); |
| } |
| spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); |
| } |
| |
| /** |
| * mpi3mr_dequeue_fwevt - Dequeue firmware event from the list |
| * @mrioc: Adapter instance reference |
| * |
| * Dequeue a firmware event from the firmware event list. |
| * |
| * Return: firmware event. |
| */ |
| static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt( |
| struct mpi3mr_ioc *mrioc) |
| { |
| unsigned long flags; |
| struct mpi3mr_fwevt *fwevt = NULL; |
| |
| spin_lock_irqsave(&mrioc->fwevt_lock, flags); |
| if (!list_empty(&mrioc->fwevt_list)) { |
| fwevt = list_first_entry(&mrioc->fwevt_list, |
| struct mpi3mr_fwevt, list); |
| list_del_init(&fwevt->list); |
| /* |
| * Put fwevt reference count after |
| * removing it from fwevt_list |
| */ |
| mpi3mr_fwevt_put(fwevt); |
| } |
| spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); |
| |
| return fwevt; |
| } |
| |
| /** |
| * mpi3mr_cancel_work - cancel firmware event |
| * @fwevt: fwevt object which needs to be canceled |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_cancel_work(struct mpi3mr_fwevt *fwevt) |
| { |
| /* |
| * Wait on the fwevt to complete. If this returns 1, then |
| * the event was never executed. |
| * |
| * If it did execute, we wait for it to finish, and the put will |
| * happen from mpi3mr_process_fwevt() |
| */ |
| if (cancel_work_sync(&fwevt->work)) { |
| /* |
| * Put fwevt reference count after |
| * dequeuing it from worker queue |
| */ |
| mpi3mr_fwevt_put(fwevt); |
| /* |
| * Put fwevt reference count to neutralize |
| * kref_init increment |
| */ |
| mpi3mr_fwevt_put(fwevt); |
| } |
| } |
| |
| /** |
| * mpi3mr_cleanup_fwevt_list - Cleanup firmware event list |
| * @mrioc: Adapter instance reference |
| * |
| * Flush all pending firmware events from the firmware event |
| * list. |
| * |
| * Return: Nothing. |
| */ |
| void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc) |
| { |
| struct mpi3mr_fwevt *fwevt = NULL; |
| |
| if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) || |
| !mrioc->fwevt_worker_thread) |
| return; |
| |
| while ((fwevt = mpi3mr_dequeue_fwevt(mrioc))) |
| mpi3mr_cancel_work(fwevt); |
| |
| if (mrioc->current_event) { |
| fwevt = mrioc->current_event; |
| /* |
| * Don't call cancel_work_sync() API for the |
| * fwevt work if the controller reset is |
| * get called as part of processing the |
| * same fwevt work (or) when worker thread is |
| * waiting for device add/remove APIs to complete. |
| * Otherwise we will see deadlock. |
| */ |
| if (current_work() == &fwevt->work || fwevt->pending_at_sml) { |
| fwevt->discard = 1; |
| return; |
| } |
| |
| mpi3mr_cancel_work(fwevt); |
| } |
| } |
| |
| /** |
| * mpi3mr_queue_qd_reduction_event - Queue TG QD reduction event |
| * @mrioc: Adapter instance reference |
| * @tg: Throttle group information pointer |
| * |
| * Accessor to queue on synthetically generated driver event to |
| * the event worker thread, the driver event will be used to |
| * reduce the QD of all VDs in the TG from the worker thread. |
| * |
| * Return: None. |
| */ |
| static void mpi3mr_queue_qd_reduction_event(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_throttle_group_info *tg) |
| { |
| struct mpi3mr_fwevt *fwevt; |
| u16 sz = sizeof(struct mpi3mr_throttle_group_info *); |
| |
| /* |
| * If the QD reduction event is already queued due to throttle and if |
| * the QD is not restored through device info change event |
| * then dont queue further reduction events |
| */ |
| if (tg->fw_qd != tg->modified_qd) |
| return; |
| |
| fwevt = mpi3mr_alloc_fwevt(sz); |
| if (!fwevt) { |
| ioc_warn(mrioc, "failed to queue TG QD reduction event\n"); |
| return; |
| } |
| *(struct mpi3mr_throttle_group_info **)fwevt->event_data = tg; |
| fwevt->mrioc = mrioc; |
| fwevt->event_id = MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION; |
| fwevt->send_ack = 0; |
| fwevt->process_evt = 1; |
| fwevt->evt_ctx = 0; |
| fwevt->event_data_size = sz; |
| tg->modified_qd = max_t(u16, (tg->fw_qd * tg->qd_reduction) / 10, 8); |
| |
| dprint_event_bh(mrioc, "qd reduction event queued for tg_id(%d)\n", |
| tg->id); |
| mpi3mr_fwevt_add_to_list(mrioc, fwevt); |
| } |
| |
| /** |
| * mpi3mr_invalidate_devhandles -Invalidate device handles |
| * @mrioc: Adapter instance reference |
| * |
| * Invalidate the device handles in the target device structures |
| * . Called post reset prior to reinitializing the controller. |
| * |
| * Return: Nothing. |
| */ |
| void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| struct mpi3mr_stgt_priv_data *tgt_priv; |
| |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { |
| tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| tgt_priv = tgtdev->starget->hostdata; |
| tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| tgt_priv->io_throttle_enabled = 0; |
| tgt_priv->io_divert = 0; |
| tgt_priv->throttle_group = NULL; |
| } |
| } |
| } |
| |
| /** |
| * mpi3mr_print_scmd - print individual SCSI command |
| * @rq: Block request |
| * @data: Adapter instance reference |
| * |
| * Print the SCSI command details if it is in LLD scope. |
| * |
| * Return: true always. |
| */ |
| static bool mpi3mr_print_scmd(struct request *rq, void *data) |
| { |
| struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data; |
| struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
| struct scmd_priv *priv = NULL; |
| |
| if (scmd) { |
| priv = scsi_cmd_priv(scmd); |
| if (!priv->in_lld_scope) |
| goto out; |
| |
| ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n", |
| __func__, priv->host_tag, priv->req_q_idx + 1); |
| scsi_print_command(scmd); |
| } |
| |
| out: |
| return(true); |
| } |
| |
| /** |
| * mpi3mr_flush_scmd - Flush individual SCSI command |
| * @rq: Block request |
| * @data: Adapter instance reference |
| * |
| * Return the SCSI command to the upper layers if it is in LLD |
| * scope. |
| * |
| * Return: true always. |
| */ |
| |
| static bool mpi3mr_flush_scmd(struct request *rq, void *data) |
| { |
| struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data; |
| struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
| struct scmd_priv *priv = NULL; |
| |
| if (scmd) { |
| priv = scsi_cmd_priv(scmd); |
| if (!priv->in_lld_scope) |
| goto out; |
| |
| if (priv->meta_sg_valid) |
| dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd), |
| scsi_prot_sg_count(scmd), scmd->sc_data_direction); |
| mpi3mr_clear_scmd_priv(mrioc, scmd); |
| scsi_dma_unmap(scmd); |
| scmd->result = DID_RESET << 16; |
| scsi_print_command(scmd); |
| scsi_done(scmd); |
| mrioc->flush_io_count++; |
| } |
| |
| out: |
| return(true); |
| } |
| |
| /** |
| * mpi3mr_count_dev_pending - Count commands pending for a lun |
| * @rq: Block request |
| * @data: SCSI device reference |
| * |
| * This is an iterator function called for each SCSI command in |
| * a host and if the command is pending in the LLD for the |
| * specific device(lun) then device specific pending I/O counter |
| * is updated in the device structure. |
| * |
| * Return: true always. |
| */ |
| |
| static bool mpi3mr_count_dev_pending(struct request *rq, void *data) |
| { |
| struct scsi_device *sdev = (struct scsi_device *)data; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data = sdev->hostdata; |
| struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
| struct scmd_priv *priv; |
| |
| if (scmd) { |
| priv = scsi_cmd_priv(scmd); |
| if (!priv->in_lld_scope) |
| goto out; |
| if (scmd->device == sdev) |
| sdev_priv_data->pend_count++; |
| } |
| |
| out: |
| return true; |
| } |
| |
| /** |
| * mpi3mr_count_tgt_pending - Count commands pending for target |
| * @rq: Block request |
| * @data: SCSI target reference |
| * |
| * This is an iterator function called for each SCSI command in |
| * a host and if the command is pending in the LLD for the |
| * specific target then target specific pending I/O counter is |
| * updated in the target structure. |
| * |
| * Return: true always. |
| */ |
| |
| static bool mpi3mr_count_tgt_pending(struct request *rq, void *data) |
| { |
| struct scsi_target *starget = (struct scsi_target *)data; |
| struct mpi3mr_stgt_priv_data *stgt_priv_data = starget->hostdata; |
| struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
| struct scmd_priv *priv; |
| |
| if (scmd) { |
| priv = scsi_cmd_priv(scmd); |
| if (!priv->in_lld_scope) |
| goto out; |
| if (scmd->device && (scsi_target(scmd->device) == starget)) |
| stgt_priv_data->pend_count++; |
| } |
| |
| out: |
| return true; |
| } |
| |
| /** |
| * mpi3mr_flush_host_io - Flush host I/Os |
| * @mrioc: Adapter instance reference |
| * |
| * Flush all of the pending I/Os by calling |
| * blk_mq_tagset_busy_iter() for each possible tag. This is |
| * executed post controller reset |
| * |
| * Return: Nothing. |
| */ |
| void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc) |
| { |
| struct Scsi_Host *shost = mrioc->shost; |
| |
| mrioc->flush_io_count = 0; |
| ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__); |
| blk_mq_tagset_busy_iter(&shost->tag_set, |
| mpi3mr_flush_scmd, (void *)mrioc); |
| ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__, |
| mrioc->flush_io_count); |
| } |
| |
| /** |
| * mpi3mr_alloc_tgtdev - target device allocator |
| * |
| * Allocate target device instance and initialize the reference |
| * count |
| * |
| * Return: target device instance. |
| */ |
| static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC); |
| if (!tgtdev) |
| return NULL; |
| kref_init(&tgtdev->ref_count); |
| return tgtdev; |
| } |
| |
| /** |
| * mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list |
| * @mrioc: Adapter instance reference |
| * @tgtdev: Target device |
| * |
| * Add the target device to the target device list |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_tgt_dev *tgtdev) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| mpi3mr_tgtdev_get(tgtdev); |
| INIT_LIST_HEAD(&tgtdev->list); |
| list_add_tail(&tgtdev->list, &mrioc->tgtdev_list); |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| } |
| |
| /** |
| * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list |
| * @mrioc: Adapter instance reference |
| * @tgtdev: Target device |
| * |
| * Remove the target device from the target device list |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_tgt_dev *tgtdev) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| if (!list_empty(&tgtdev->list)) { |
| list_del_init(&tgtdev->list); |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| } |
| |
| /** |
| * __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle |
| * @mrioc: Adapter instance reference |
| * @handle: Device handle |
| * |
| * Accessor to retrieve target device from the device handle. |
| * Non Lock version |
| * |
| * Return: Target device reference. |
| */ |
| static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle( |
| struct mpi3mr_ioc *mrioc, u16 handle) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| assert_spin_locked(&mrioc->tgtdev_lock); |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) |
| if (tgtdev->dev_handle == handle) |
| goto found_tgtdev; |
| return NULL; |
| |
| found_tgtdev: |
| mpi3mr_tgtdev_get(tgtdev); |
| return tgtdev; |
| } |
| |
| /** |
| * mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle |
| * @mrioc: Adapter instance reference |
| * @handle: Device handle |
| * |
| * Accessor to retrieve target device from the device handle. |
| * Lock version |
| * |
| * Return: Target device reference. |
| */ |
| struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle( |
| struct mpi3mr_ioc *mrioc, u16 handle) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| return tgtdev; |
| } |
| |
| /** |
| * __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID |
| * @mrioc: Adapter instance reference |
| * @persist_id: Persistent ID |
| * |
| * Accessor to retrieve target device from the Persistent ID. |
| * Non Lock version |
| * |
| * Return: Target device reference. |
| */ |
| static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id( |
| struct mpi3mr_ioc *mrioc, u16 persist_id) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| assert_spin_locked(&mrioc->tgtdev_lock); |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) |
| if (tgtdev->perst_id == persist_id) |
| goto found_tgtdev; |
| return NULL; |
| |
| found_tgtdev: |
| mpi3mr_tgtdev_get(tgtdev); |
| return tgtdev; |
| } |
| |
| /** |
| * mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID |
| * @mrioc: Adapter instance reference |
| * @persist_id: Persistent ID |
| * |
| * Accessor to retrieve target device from the Persistent ID. |
| * Lock version |
| * |
| * Return: Target device reference. |
| */ |
| static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id( |
| struct mpi3mr_ioc *mrioc, u16 persist_id) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id); |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| return tgtdev; |
| } |
| |
| /** |
| * __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private |
| * @mrioc: Adapter instance reference |
| * @tgt_priv: Target private data |
| * |
| * Accessor to return target device from the target private |
| * data. Non Lock version |
| * |
| * Return: Target device reference. |
| */ |
| static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv( |
| struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| assert_spin_locked(&mrioc->tgtdev_lock); |
| tgtdev = tgt_priv->tgt_dev; |
| if (tgtdev) |
| mpi3mr_tgtdev_get(tgtdev); |
| return tgtdev; |
| } |
| |
| /** |
| * mpi3mr_set_io_divert_for_all_vd_in_tg -set divert for TG VDs |
| * @mrioc: Adapter instance reference |
| * @tg: Throttle group information pointer |
| * @divert_value: 1 or 0 |
| * |
| * Accessor to set io_divert flag for each device associated |
| * with the given throttle group with the given value. |
| * |
| * Return: None. |
| */ |
| static void mpi3mr_set_io_divert_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_throttle_group_info *tg, u8 divert_value) |
| { |
| unsigned long flags; |
| struct mpi3mr_tgt_dev *tgtdev; |
| struct mpi3mr_stgt_priv_data *tgt_priv; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| tgt_priv = tgtdev->starget->hostdata; |
| if (tgt_priv->throttle_group == tg) |
| tgt_priv->io_divert = divert_value; |
| } |
| } |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| } |
| |
| /** |
| * mpi3mr_print_device_event_notice - print notice related to post processing of |
| * device event after controller reset. |
| * |
| * @mrioc: Adapter instance reference |
| * @device_add: true for device add event and false for device removal event |
| * |
| * Return: None. |
| */ |
| static void mpi3mr_print_device_event_notice(struct mpi3mr_ioc *mrioc, |
| bool device_add) |
| { |
| ioc_notice(mrioc, "Device %s was in progress before the reset and\n", |
| (device_add ? "addition" : "removal")); |
| ioc_notice(mrioc, "completed after reset, verify whether the exposed devices\n"); |
| ioc_notice(mrioc, "are matched with attached devices for correctness\n"); |
| } |
| |
| /** |
| * mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers |
| * @mrioc: Adapter instance reference |
| * @tgtdev: Target device structure |
| * |
| * Checks whether the device is exposed to upper layers and if it |
| * is then remove the device from upper layers by calling |
| * scsi_remove_target(). |
| * |
| * Return: 0 on success, non zero on failure. |
| */ |
| static void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_tgt_dev *tgtdev) |
| { |
| struct mpi3mr_stgt_priv_data *tgt_priv; |
| |
| ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n", |
| __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid); |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| tgt_priv = tgtdev->starget->hostdata; |
| tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| } |
| |
| if (tgtdev->starget) { |
| if (mrioc->current_event) |
| mrioc->current_event->pending_at_sml = 1; |
| scsi_remove_target(&tgtdev->starget->dev); |
| tgtdev->host_exposed = 0; |
| if (mrioc->current_event) { |
| mrioc->current_event->pending_at_sml = 0; |
| if (mrioc->current_event->discard) { |
| mpi3mr_print_device_event_notice(mrioc, false); |
| return; |
| } |
| } |
| } |
| ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n", |
| __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid); |
| } |
| |
| /** |
| * mpi3mr_report_tgtdev_to_host - Expose device to upper layers |
| * @mrioc: Adapter instance reference |
| * @perst_id: Persistent ID of the device |
| * |
| * Checks whether the device can be exposed to upper layers and |
| * if it is not then expose the device to upper layers by |
| * calling scsi_scan_target(). |
| * |
| * Return: 0 on success, non zero on failure. |
| */ |
| static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc, |
| u16 perst_id) |
| { |
| int retval = 0; |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); |
| if (!tgtdev) { |
| retval = -1; |
| goto out; |
| } |
| if (tgtdev->is_hidden) { |
| retval = -1; |
| goto out; |
| } |
| if (!tgtdev->host_exposed && !mrioc->reset_in_progress) { |
| tgtdev->host_exposed = 1; |
| if (mrioc->current_event) |
| mrioc->current_event->pending_at_sml = 1; |
| scsi_scan_target(&mrioc->shost->shost_gendev, 0, |
| tgtdev->perst_id, |
| SCAN_WILD_CARD, SCSI_SCAN_INITIAL); |
| if (!tgtdev->starget) |
| tgtdev->host_exposed = 0; |
| if (mrioc->current_event) { |
| mrioc->current_event->pending_at_sml = 0; |
| if (mrioc->current_event->discard) { |
| mpi3mr_print_device_event_notice(mrioc, true); |
| goto out; |
| } |
| } |
| } |
| out: |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_change_queue_depth- Change QD callback handler |
| * @sdev: SCSI device reference |
| * @q_depth: Queue depth |
| * |
| * Validate and limit QD and call scsi_change_queue_depth. |
| * |
| * Return: return value of scsi_change_queue_depth |
| */ |
| static int mpi3mr_change_queue_depth(struct scsi_device *sdev, |
| int q_depth) |
| { |
| struct scsi_target *starget = scsi_target(sdev); |
| struct Scsi_Host *shost = dev_to_shost(&starget->dev); |
| int retval = 0; |
| |
| if (!sdev->tagged_supported) |
| q_depth = 1; |
| if (q_depth > shost->can_queue) |
| q_depth = shost->can_queue; |
| else if (!q_depth) |
| q_depth = MPI3MR_DEFAULT_SDEV_QD; |
| retval = scsi_change_queue_depth(sdev, q_depth); |
| sdev->max_queue_depth = sdev->queue_depth; |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_update_sdev - Update SCSI device information |
| * @sdev: SCSI device reference |
| * @data: target device reference |
| * |
| * This is an iterator function called for each SCSI device in a |
| * target to update the target specific information into each |
| * SCSI device. |
| * |
| * Return: Nothing. |
| */ |
| static void |
| mpi3mr_update_sdev(struct scsi_device *sdev, void *data) |
| { |
| struct mpi3mr_tgt_dev *tgtdev; |
| |
| tgtdev = (struct mpi3mr_tgt_dev *)data; |
| if (!tgtdev) |
| return; |
| |
| mpi3mr_change_queue_depth(sdev, tgtdev->q_depth); |
| switch (tgtdev->dev_type) { |
| case MPI3_DEVICE_DEVFORM_PCIE: |
| /*The block layer hw sector size = 512*/ |
| if ((tgtdev->dev_spec.pcie_inf.dev_info & |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { |
| blk_queue_max_hw_sectors(sdev->request_queue, |
| tgtdev->dev_spec.pcie_inf.mdts / 512); |
| if (tgtdev->dev_spec.pcie_inf.pgsz == 0) |
| blk_queue_virt_boundary(sdev->request_queue, |
| ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); |
| else |
| blk_queue_virt_boundary(sdev->request_queue, |
| ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1)); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * mpi3mr_rfresh_tgtdevs - Refresh target device exposure |
| * @mrioc: Adapter instance reference |
| * |
| * This is executed post controller reset to identify any |
| * missing devices during reset and remove from the upper layers |
| * or expose any newly detected device to the upper layers. |
| * |
| * Return: Nothing. |
| */ |
| |
| void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc) |
| { |
| struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; |
| |
| list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, |
| list) { |
| if (tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) { |
| dprint_reset(mrioc, "removing target device with perst_id(%d)\n", |
| tgtdev->perst_id); |
| if (tgtdev->host_exposed) |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| } |
| |
| tgtdev = NULL; |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { |
| if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) && |
| !tgtdev->is_hidden && !tgtdev->host_exposed) |
| mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id); |
| } |
| } |
| |
| /** |
| * mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf |
| * @mrioc: Adapter instance reference |
| * @tgtdev: Target device internal structure |
| * @dev_pg0: New device page0 |
| * @is_added: Flag to indicate the device is just added |
| * |
| * Update the information from the device page0 into the driver |
| * cached target device structure. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0, |
| bool is_added) |
| { |
| u16 flags = 0; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; |
| u8 prot_mask = 0; |
| |
| tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id); |
| tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle); |
| tgtdev->dev_type = dev_pg0->device_form; |
| tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle); |
| tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle); |
| tgtdev->slot = le16_to_cpu(dev_pg0->slot); |
| tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth); |
| tgtdev->wwid = le64_to_cpu(dev_pg0->wwid); |
| |
| flags = le16_to_cpu(dev_pg0->flags); |
| tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN); |
| |
| if (is_added == true) |
| tgtdev->io_throttle_enabled = |
| (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0; |
| |
| |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) |
| tgtdev->starget->hostdata; |
| scsi_tgt_priv_data->perst_id = tgtdev->perst_id; |
| scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle; |
| scsi_tgt_priv_data->dev_type = tgtdev->dev_type; |
| scsi_tgt_priv_data->io_throttle_enabled = |
| tgtdev->io_throttle_enabled; |
| } |
| |
| switch (dev_pg0->access_status) { |
| case MPI3_DEVICE0_ASTATUS_NO_ERRORS: |
| case MPI3_DEVICE0_ASTATUS_PREPARE: |
| case MPI3_DEVICE0_ASTATUS_NEEDS_INITIALIZATION: |
| case MPI3_DEVICE0_ASTATUS_DEVICE_MISSING_DELAY: |
| break; |
| default: |
| tgtdev->is_hidden = 1; |
| break; |
| } |
| |
| switch (tgtdev->dev_type) { |
| case MPI3_DEVICE_DEVFORM_SAS_SATA: |
| { |
| struct mpi3_device0_sas_sata_format *sasinf = |
| &dev_pg0->device_specific.sas_sata_format; |
| u16 dev_info = le16_to_cpu(sasinf->device_info); |
| |
| tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info; |
| tgtdev->dev_spec.sas_sata_inf.sas_address = |
| le64_to_cpu(sasinf->sas_address); |
| if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) != |
| MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE) |
| tgtdev->is_hidden = 1; |
| else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET | |
| MPI3_SAS_DEVICE_INFO_SSP_TARGET))) |
| tgtdev->is_hidden = 1; |
| break; |
| } |
| case MPI3_DEVICE_DEVFORM_PCIE: |
| { |
| struct mpi3_device0_pcie_format *pcieinf = |
| &dev_pg0->device_specific.pcie_format; |
| u16 dev_info = le16_to_cpu(pcieinf->device_info); |
| |
| tgtdev->dev_spec.pcie_inf.dev_info = dev_info; |
| tgtdev->dev_spec.pcie_inf.capb = |
| le32_to_cpu(pcieinf->capabilities); |
| tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS; |
| /* 2^12 = 4096 */ |
| tgtdev->dev_spec.pcie_inf.pgsz = 12; |
| if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) { |
| tgtdev->dev_spec.pcie_inf.mdts = |
| le32_to_cpu(pcieinf->maximum_data_transfer_size); |
| tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size; |
| tgtdev->dev_spec.pcie_inf.reset_to = |
| max_t(u8, pcieinf->controller_reset_to, |
| MPI3MR_INTADMCMD_TIMEOUT); |
| tgtdev->dev_spec.pcie_inf.abort_to = |
| max_t(u8, pcieinf->nvme_abort_to, |
| MPI3MR_INTADMCMD_TIMEOUT); |
| } |
| if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024)) |
| tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024); |
| if (((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) != |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) && |
| ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) != |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE)) |
| tgtdev->is_hidden = 1; |
| if (!mrioc->shost) |
| break; |
| prot_mask = scsi_host_get_prot(mrioc->shost); |
| if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) { |
| scsi_host_set_prot(mrioc->shost, prot_mask & 0x77); |
| ioc_info(mrioc, |
| "%s : Disabling DIX0 prot capability\n", __func__); |
| ioc_info(mrioc, |
| "because HBA does not support DIX0 operation on NVME drives\n"); |
| } |
| break; |
| } |
| case MPI3_DEVICE_DEVFORM_VD: |
| { |
| struct mpi3_device0_vd_format *vdinf = |
| &dev_pg0->device_specific.vd_format; |
| struct mpi3mr_throttle_group_info *tg = NULL; |
| u16 vdinf_io_throttle_group = |
| le16_to_cpu(vdinf->io_throttle_group); |
| |
| tgtdev->dev_spec.vd_inf.state = vdinf->vd_state; |
| if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE) |
| tgtdev->is_hidden = 1; |
| tgtdev->dev_spec.vd_inf.tg_id = vdinf_io_throttle_group; |
| tgtdev->dev_spec.vd_inf.tg_high = |
| le16_to_cpu(vdinf->io_throttle_group_high) * 2048; |
| tgtdev->dev_spec.vd_inf.tg_low = |
| le16_to_cpu(vdinf->io_throttle_group_low) * 2048; |
| if (vdinf_io_throttle_group < mrioc->num_io_throttle_group) { |
| tg = mrioc->throttle_groups + vdinf_io_throttle_group; |
| tg->id = vdinf_io_throttle_group; |
| tg->high = tgtdev->dev_spec.vd_inf.tg_high; |
| tg->low = tgtdev->dev_spec.vd_inf.tg_low; |
| tg->qd_reduction = |
| tgtdev->dev_spec.vd_inf.tg_qd_reduction; |
| if (is_added == true) |
| tg->fw_qd = tgtdev->q_depth; |
| tg->modified_qd = tgtdev->q_depth; |
| } |
| tgtdev->dev_spec.vd_inf.tg = tg; |
| if (scsi_tgt_priv_data) |
| scsi_tgt_priv_data->throttle_group = tg; |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event information. |
| * |
| * Process Device status Change event and based on device's new |
| * information, either expose the device to the upper layers, or |
| * remove the device from upper layers. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| u16 dev_handle = 0; |
| u8 uhide = 0, delete = 0, cleanup = 0; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| struct mpi3_event_data_device_status_change *evtdata = |
| (struct mpi3_event_data_device_status_change *)fwevt->event_data; |
| |
| dev_handle = le16_to_cpu(evtdata->dev_handle); |
| ioc_info(mrioc, |
| "%s :device status change: handle(0x%04x): reason code(0x%x)\n", |
| __func__, dev_handle, evtdata->reason_code); |
| switch (evtdata->reason_code) { |
| case MPI3_EVENT_DEV_STAT_RC_HIDDEN: |
| delete = 1; |
| break; |
| case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN: |
| uhide = 1; |
| break; |
| case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING: |
| delete = 1; |
| cleanup = 1; |
| break; |
| default: |
| ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__, |
| evtdata->reason_code); |
| break; |
| } |
| |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); |
| if (!tgtdev) |
| goto out; |
| if (uhide) { |
| tgtdev->is_hidden = 0; |
| if (!tgtdev->host_exposed) |
| mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id); |
| } |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| if (delete) |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| } |
| if (cleanup) { |
| mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| |
| out: |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| |
| /** |
| * mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf |
| * @mrioc: Adapter instance reference |
| * @dev_pg0: New device page0 |
| * |
| * Process Device Info Change event and based on device's new |
| * information, either expose the device to the upper layers, or |
| * remove the device from upper layers or update the details of |
| * the device. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3_device_page0 *dev_pg0) |
| { |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| u16 dev_handle = 0, perst_id = 0; |
| |
| perst_id = le16_to_cpu(dev_pg0->persistent_id); |
| dev_handle = le16_to_cpu(dev_pg0->dev_handle); |
| ioc_info(mrioc, |
| "%s :Device info change: handle(0x%04x): persist_id(0x%x)\n", |
| __func__, dev_handle, perst_id); |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); |
| if (!tgtdev) |
| goto out; |
| mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, false); |
| if (!tgtdev->is_hidden && !tgtdev->host_exposed) |
| mpi3mr_report_tgtdev_to_host(mrioc, perst_id); |
| if (tgtdev->is_hidden && tgtdev->host_exposed) |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget) |
| starget_for_each_device(tgtdev->starget, (void *)tgtdev, |
| mpi3mr_update_sdev); |
| out: |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| |
| /** |
| * mpi3mr_sastopochg_evt_debug - SASTopoChange details |
| * @mrioc: Adapter instance reference |
| * @event_data: SAS topology change list event data |
| * |
| * Prints information about the SAS topology change event. |
| * |
| * Return: Nothing. |
| */ |
| static void |
| mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_data_sas_topology_change_list *event_data) |
| { |
| int i; |
| u16 handle; |
| u8 reason_code, phy_number; |
| char *status_str = NULL; |
| u8 link_rate, prev_link_rate; |
| |
| switch (event_data->exp_status) { |
| case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING: |
| status_str = "remove"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_ES_RESPONDING: |
| status_str = "responding"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING: |
| status_str = "remove delay"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER: |
| status_str = "direct attached"; |
| break; |
| default: |
| status_str = "unknown status"; |
| break; |
| } |
| ioc_info(mrioc, "%s :sas topology change: (%s)\n", |
| __func__, status_str); |
| ioc_info(mrioc, |
| "%s :\texpander_handle(0x%04x), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n", |
| __func__, le16_to_cpu(event_data->expander_dev_handle), |
| le16_to_cpu(event_data->enclosure_handle), |
| event_data->start_phy_num, event_data->num_entries); |
| for (i = 0; i < event_data->num_entries; i++) { |
| handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| phy_number = event_data->start_phy_num + i; |
| reason_code = event_data->phy_entry[i].status & |
| MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; |
| switch (reason_code) { |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: |
| status_str = "target remove"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING: |
| status_str = "delay target remove"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED: |
| status_str = "link status change"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE: |
| status_str = "link status no change"; |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING: |
| status_str = "target responding"; |
| break; |
| default: |
| status_str = "unknown"; |
| break; |
| } |
| link_rate = event_data->phy_entry[i].link_rate >> 4; |
| prev_link_rate = event_data->phy_entry[i].link_rate & 0xF; |
| ioc_info(mrioc, |
| "%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n", |
| __func__, phy_number, handle, status_str, link_rate, |
| prev_link_rate); |
| } |
| } |
| |
| /** |
| * mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Prints information about the SAS topology change event and |
| * for "not responding" event code, removes the device from the |
| * upper layers. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| struct mpi3_event_data_sas_topology_change_list *event_data = |
| (struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data; |
| int i; |
| u16 handle; |
| u8 reason_code; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| |
| mpi3mr_sastopochg_evt_debug(mrioc, event_data); |
| |
| for (i = 0; i < event_data->num_entries; i++) { |
| if (fwevt->discard) |
| return; |
| handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| if (!tgtdev) |
| continue; |
| |
| reason_code = event_data->phy_entry[i].status & |
| MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; |
| |
| switch (reason_code) { |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: |
| if (tgtdev->host_exposed) |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); |
| mpi3mr_tgtdev_put(tgtdev); |
| break; |
| default: |
| break; |
| } |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| } |
| |
| /** |
| * mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details |
| * @mrioc: Adapter instance reference |
| * @event_data: PCIe topology change list event data |
| * |
| * Prints information about the PCIe topology change event. |
| * |
| * Return: Nothing. |
| */ |
| static void |
| mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_data_pcie_topology_change_list *event_data) |
| { |
| int i; |
| u16 handle; |
| u16 reason_code; |
| u8 port_number; |
| char *status_str = NULL; |
| u8 link_rate, prev_link_rate; |
| |
| switch (event_data->switch_status) { |
| case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING: |
| status_str = "remove"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING: |
| status_str = "responding"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING: |
| status_str = "remove delay"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH: |
| status_str = "direct attached"; |
| break; |
| default: |
| status_str = "unknown status"; |
| break; |
| } |
| ioc_info(mrioc, "%s :pcie topology change: (%s)\n", |
| __func__, status_str); |
| ioc_info(mrioc, |
| "%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n", |
| __func__, le16_to_cpu(event_data->switch_dev_handle), |
| le16_to_cpu(event_data->enclosure_handle), |
| event_data->start_port_num, event_data->num_entries); |
| for (i = 0; i < event_data->num_entries; i++) { |
| handle = |
| le16_to_cpu(event_data->port_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| port_number = event_data->start_port_num + i; |
| reason_code = event_data->port_entry[i].port_status; |
| switch (reason_code) { |
| case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: |
| status_str = "target remove"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING: |
| status_str = "delay target remove"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED: |
| status_str = "link status change"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE: |
| status_str = "link status no change"; |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING: |
| status_str = "target responding"; |
| break; |
| default: |
| status_str = "unknown"; |
| break; |
| } |
| link_rate = event_data->port_entry[i].current_port_info & |
| MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK; |
| prev_link_rate = event_data->port_entry[i].previous_port_info & |
| MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK; |
| ioc_info(mrioc, |
| "%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n", |
| __func__, port_number, handle, status_str, link_rate, |
| prev_link_rate); |
| } |
| } |
| |
| /** |
| * mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Prints information about the PCIe topology change event and |
| * for "not responding" event code, removes the device from the |
| * upper layers. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| struct mpi3_event_data_pcie_topology_change_list *event_data = |
| (struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data; |
| int i; |
| u16 handle; |
| u8 reason_code; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| |
| mpi3mr_pcietopochg_evt_debug(mrioc, event_data); |
| |
| for (i = 0; i < event_data->num_entries; i++) { |
| if (fwevt->discard) |
| return; |
| handle = |
| le16_to_cpu(event_data->port_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| if (!tgtdev) |
| continue; |
| |
| reason_code = event_data->port_entry[i].port_status; |
| |
| switch (reason_code) { |
| case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: |
| if (tgtdev->host_exposed) |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); |
| mpi3mr_tgtdev_put(tgtdev); |
| break; |
| default: |
| break; |
| } |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| } |
| |
| /** |
| * mpi3mr_logdata_evt_bh - Log data event bottomhalf |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Extracts the event data and calls application interfacing |
| * function to process the event further. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_logdata_evt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| mpi3mr_app_save_logdata(mrioc, fwevt->event_data, |
| fwevt->event_data_size); |
| } |
| |
| /** |
| * mpi3mr_update_sdev_qd - Update SCSI device queue depath |
| * @sdev: SCSI device reference |
| * @data: Queue depth reference |
| * |
| * This is an iterator function called for each SCSI device in a |
| * target to update the QD of each SCSI device. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_update_sdev_qd(struct scsi_device *sdev, void *data) |
| { |
| u16 *q_depth = (u16 *)data; |
| |
| scsi_change_queue_depth(sdev, (int)*q_depth); |
| sdev->max_queue_depth = sdev->queue_depth; |
| } |
| |
| /** |
| * mpi3mr_set_qd_for_all_vd_in_tg -set QD for TG VDs |
| * @mrioc: Adapter instance reference |
| * @tg: Throttle group information pointer |
| * |
| * Accessor to reduce QD for each device associated with the |
| * given throttle group. |
| * |
| * Return: None. |
| */ |
| static void mpi3mr_set_qd_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_throttle_group_info *tg) |
| { |
| unsigned long flags; |
| struct mpi3mr_tgt_dev *tgtdev; |
| struct mpi3mr_stgt_priv_data *tgt_priv; |
| |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| tgt_priv = tgtdev->starget->hostdata; |
| if (tgt_priv->throttle_group == tg) { |
| dprint_event_bh(mrioc, |
| "updating qd due to throttling for persist_id(%d) original_qd(%d), reduced_qd (%d)\n", |
| tgt_priv->perst_id, tgtdev->q_depth, |
| tg->modified_qd); |
| starget_for_each_device(tgtdev->starget, |
| (void *)&tg->modified_qd, |
| mpi3mr_update_sdev_qd); |
| } |
| } |
| } |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| } |
| |
| /** |
| * mpi3mr_fwevt_bh - Firmware event bottomhalf handler |
| * @mrioc: Adapter instance reference |
| * @fwevt: Firmware event reference |
| * |
| * Identifies the firmware event and calls corresponding bottomg |
| * half handler and sends event acknowledgment if required. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_fwevt *fwevt) |
| { |
| mpi3mr_fwevt_del_from_list(mrioc, fwevt); |
| mrioc->current_event = fwevt; |
| |
| if (mrioc->stop_drv_processing) |
| goto out; |
| |
| if (!fwevt->process_evt) |
| goto evt_ack; |
| |
| switch (fwevt->event_id) { |
| case MPI3_EVENT_DEVICE_ADDED: |
| { |
| struct mpi3_device_page0 *dev_pg0 = |
| (struct mpi3_device_page0 *)fwevt->event_data; |
| mpi3mr_report_tgtdev_to_host(mrioc, |
| le16_to_cpu(dev_pg0->persistent_id)); |
| break; |
| } |
| case MPI3_EVENT_DEVICE_INFO_CHANGED: |
| { |
| mpi3mr_devinfochg_evt_bh(mrioc, |
| (struct mpi3_device_page0 *)fwevt->event_data); |
| break; |
| } |
| case MPI3_EVENT_DEVICE_STATUS_CHANGE: |
| { |
| mpi3mr_devstatuschg_evt_bh(mrioc, fwevt); |
| break; |
| } |
| case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST: |
| { |
| mpi3mr_sastopochg_evt_bh(mrioc, fwevt); |
| break; |
| } |
| case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: |
| { |
| mpi3mr_pcietopochg_evt_bh(mrioc, fwevt); |
| break; |
| } |
| case MPI3_EVENT_LOG_DATA: |
| { |
| mpi3mr_logdata_evt_bh(mrioc, fwevt); |
| break; |
| } |
| case MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION: |
| { |
| struct mpi3mr_throttle_group_info *tg; |
| |
| tg = *(struct mpi3mr_throttle_group_info **)fwevt->event_data; |
| dprint_event_bh(mrioc, |
| "qd reduction event processed for tg_id(%d) reduction_needed(%d)\n", |
| tg->id, tg->need_qd_reduction); |
| if (tg->need_qd_reduction) { |
| mpi3mr_set_qd_for_all_vd_in_tg(mrioc, tg); |
| tg->need_qd_reduction = 0; |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| |
| evt_ack: |
| if (fwevt->send_ack) |
| mpi3mr_process_event_ack(mrioc, fwevt->event_id, |
| fwevt->evt_ctx); |
| out: |
| /* Put fwevt reference count to neutralize kref_init increment */ |
| mpi3mr_fwevt_put(fwevt); |
| mrioc->current_event = NULL; |
| } |
| |
| /** |
| * mpi3mr_fwevt_worker - Firmware event worker |
| * @work: Work struct containing firmware event |
| * |
| * Extracts the firmware event and calls mpi3mr_fwevt_bh. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_fwevt_worker(struct work_struct *work) |
| { |
| struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt, |
| work); |
| mpi3mr_fwevt_bh(fwevt->mrioc, fwevt); |
| /* |
| * Put fwevt reference count after |
| * dequeuing it from worker queue |
| */ |
| mpi3mr_fwevt_put(fwevt); |
| } |
| |
| /** |
| * mpi3mr_create_tgtdev - Create and add a target device |
| * @mrioc: Adapter instance reference |
| * @dev_pg0: Device Page 0 data |
| * |
| * If the device specified by the device page 0 data is not |
| * present in the driver's internal list, allocate the memory |
| * for the device, populate the data and add to the list, else |
| * update the device data. The key is persistent ID. |
| * |
| * Return: 0 on success, -ENOMEM on memory allocation failure |
| */ |
| static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc, |
| struct mpi3_device_page0 *dev_pg0) |
| { |
| int retval = 0; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| u16 perst_id = 0; |
| |
| perst_id = le16_to_cpu(dev_pg0->persistent_id); |
| tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); |
| if (tgtdev) { |
| mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true); |
| mpi3mr_tgtdev_put(tgtdev); |
| } else { |
| tgtdev = mpi3mr_alloc_tgtdev(); |
| if (!tgtdev) |
| return -ENOMEM; |
| mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true); |
| mpi3mr_tgtdev_add_to_list(mrioc, tgtdev); |
| } |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_flush_delayed_cmd_lists - Flush pending commands |
| * @mrioc: Adapter instance reference |
| * |
| * Flush pending commands in the delayed lists due to a |
| * controller reset or driver removal as a cleanup. |
| * |
| * Return: Nothing |
| */ |
| void mpi3mr_flush_delayed_cmd_lists(struct mpi3mr_ioc *mrioc) |
| { |
| struct delayed_dev_rmhs_node *_rmhs_node; |
| struct delayed_evt_ack_node *_evtack_node; |
| |
| dprint_reset(mrioc, "flushing delayed dev_remove_hs commands\n"); |
| while (!list_empty(&mrioc->delayed_rmhs_list)) { |
| _rmhs_node = list_entry(mrioc->delayed_rmhs_list.next, |
| struct delayed_dev_rmhs_node, list); |
| list_del(&_rmhs_node->list); |
| kfree(_rmhs_node); |
| } |
| dprint_reset(mrioc, "flushing delayed event ack commands\n"); |
| while (!list_empty(&mrioc->delayed_evtack_cmds_list)) { |
| _evtack_node = list_entry(mrioc->delayed_evtack_cmds_list.next, |
| struct delayed_evt_ack_node, list); |
| list_del(&_evtack_node->list); |
| kfree(_evtack_node); |
| } |
| } |
| |
| /** |
| * mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion |
| * @mrioc: Adapter instance reference |
| * @drv_cmd: Internal command tracker |
| * |
| * Issues a target reset TM to the firmware from the device |
| * removal TM pend list or retry the removal handshake sequence |
| * based on the IOU control request IOC status. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_drv_cmd *drv_cmd) |
| { |
| u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; |
| struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL; |
| |
| if (drv_cmd->state & MPI3MR_CMD_RESET) |
| goto clear_drv_cmd; |
| |
| ioc_info(mrioc, |
| "%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n", |
| __func__, drv_cmd->dev_handle, drv_cmd->ioc_status, |
| drv_cmd->ioc_loginfo); |
| if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) { |
| if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) { |
| drv_cmd->retry_count++; |
| ioc_info(mrioc, |
| "%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n", |
| __func__, drv_cmd->dev_handle, |
| drv_cmd->retry_count); |
| mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, |
| drv_cmd, drv_cmd->iou_rc); |
| return; |
| } |
| ioc_err(mrioc, |
| "%s :dev removal handshake failed after all retries: handle(0x%04x)\n", |
| __func__, drv_cmd->dev_handle); |
| } else { |
| ioc_info(mrioc, |
| "%s :dev removal handshake completed successfully: handle(0x%04x)\n", |
| __func__, drv_cmd->dev_handle); |
| clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap); |
| } |
| |
| if (!list_empty(&mrioc->delayed_rmhs_list)) { |
| delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next, |
| struct delayed_dev_rmhs_node, list); |
| drv_cmd->dev_handle = delayed_dev_rmhs->handle; |
| drv_cmd->retry_count = 0; |
| drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc; |
| ioc_info(mrioc, |
| "%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n", |
| __func__, drv_cmd->dev_handle); |
| mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd, |
| drv_cmd->iou_rc); |
| list_del(&delayed_dev_rmhs->list); |
| kfree(delayed_dev_rmhs); |
| return; |
| } |
| |
| clear_drv_cmd: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| drv_cmd->callback = NULL; |
| drv_cmd->retry_count = 0; |
| drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| clear_bit(cmd_idx, mrioc->devrem_bitmap); |
| } |
| |
| /** |
| * mpi3mr_dev_rmhs_complete_tm - Device removal TM completion |
| * @mrioc: Adapter instance reference |
| * @drv_cmd: Internal command tracker |
| * |
| * Issues a target reset TM to the firmware from the device |
| * removal TM pend list or issue IO unit control request as |
| * part of device removal or hidden acknowledgment handshake. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_drv_cmd *drv_cmd) |
| { |
| struct mpi3_iounit_control_request iou_ctrl; |
| u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; |
| struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL; |
| int retval; |
| |
| if (drv_cmd->state & MPI3MR_CMD_RESET) |
| goto clear_drv_cmd; |
| |
| if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID) |
| tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply; |
| |
| if (tm_reply) |
| pr_info(IOCNAME |
| "dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n", |
| mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status, |
| drv_cmd->ioc_loginfo, |
| le32_to_cpu(tm_reply->termination_count)); |
| |
| pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n", |
| mrioc->name, drv_cmd->dev_handle, cmd_idx); |
| |
| memset(&iou_ctrl, 0, sizeof(iou_ctrl)); |
| |
| drv_cmd->state = MPI3MR_CMD_PENDING; |
| drv_cmd->is_waiting = 0; |
| drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou; |
| iou_ctrl.operation = drv_cmd->iou_rc; |
| iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle); |
| iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag); |
| iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL; |
| |
| retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl), |
| 1); |
| if (retval) { |
| pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n", |
| mrioc->name); |
| goto clear_drv_cmd; |
| } |
| |
| return; |
| clear_drv_cmd: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| drv_cmd->callback = NULL; |
| drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| drv_cmd->retry_count = 0; |
| clear_bit(cmd_idx, mrioc->devrem_bitmap); |
| } |
| |
| /** |
| * mpi3mr_dev_rmhs_send_tm - Issue TM for device removal |
| * @mrioc: Adapter instance reference |
| * @handle: Device handle |
| * @cmdparam: Internal command tracker |
| * @iou_rc: IO unit reason code |
| * |
| * Issues a target reset TM to the firmware or add it to a pend |
| * list as part of device removal or hidden acknowledgment |
| * handshake. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle, |
| struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc) |
| { |
| struct mpi3_scsi_task_mgmt_request tm_req; |
| int retval = 0; |
| u16 cmd_idx = MPI3MR_NUM_DEVRMCMD; |
| u8 retrycount = 5; |
| struct mpi3mr_drv_cmd *drv_cmd = cmdparam; |
| struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL; |
| |
| if (drv_cmd) |
| goto issue_cmd; |
| do { |
| cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap, |
| MPI3MR_NUM_DEVRMCMD); |
| if (cmd_idx < MPI3MR_NUM_DEVRMCMD) { |
| if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap)) |
| break; |
| cmd_idx = MPI3MR_NUM_DEVRMCMD; |
| } |
| } while (retrycount--); |
| |
| if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) { |
| delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs), |
| GFP_ATOMIC); |
| if (!delayed_dev_rmhs) |
| return; |
| INIT_LIST_HEAD(&delayed_dev_rmhs->list); |
| delayed_dev_rmhs->handle = handle; |
| delayed_dev_rmhs->iou_rc = iou_rc; |
| list_add_tail(&delayed_dev_rmhs->list, |
| &mrioc->delayed_rmhs_list); |
| ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n", |
| __func__, handle); |
| return; |
| } |
| drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx]; |
| |
| issue_cmd: |
| cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; |
| ioc_info(mrioc, |
| "%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n", |
| __func__, handle, cmd_idx); |
| |
| memset(&tm_req, 0, sizeof(tm_req)); |
| if (drv_cmd->state & MPI3MR_CMD_PENDING) { |
| ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__); |
| goto out; |
| } |
| drv_cmd->state = MPI3MR_CMD_PENDING; |
| drv_cmd->is_waiting = 0; |
| drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm; |
| drv_cmd->dev_handle = handle; |
| drv_cmd->iou_rc = iou_rc; |
| tm_req.dev_handle = cpu_to_le16(handle); |
| tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET; |
| tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag); |
| tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID); |
| tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT; |
| |
| set_bit(handle, mrioc->removepend_bitmap); |
| retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1); |
| if (retval) { |
| ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n", |
| __func__); |
| goto out_failed; |
| } |
| out: |
| return; |
| out_failed: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| drv_cmd->callback = NULL; |
| drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| drv_cmd->retry_count = 0; |
| clear_bit(cmd_idx, mrioc->devrem_bitmap); |
| } |
| |
| /** |
| * mpi3mr_complete_evt_ack - event ack request completion |
| * @mrioc: Adapter instance reference |
| * @drv_cmd: Internal command tracker |
| * |
| * This is the completion handler for non blocking event |
| * acknowledgment sent to the firmware and this will issue any |
| * pending event acknowledgment request. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_complete_evt_ack(struct mpi3mr_ioc *mrioc, |
| struct mpi3mr_drv_cmd *drv_cmd) |
| { |
| u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN; |
| struct delayed_evt_ack_node *delayed_evtack = NULL; |
| |
| if (drv_cmd->state & MPI3MR_CMD_RESET) |
| goto clear_drv_cmd; |
| |
| if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) { |
| dprint_event_th(mrioc, |
| "immediate event ack failed with ioc_status(0x%04x) log_info(0x%08x)\n", |
| (drv_cmd->ioc_status & MPI3_IOCSTATUS_STATUS_MASK), |
| drv_cmd->ioc_loginfo); |
| } |
| |
| if (!list_empty(&mrioc->delayed_evtack_cmds_list)) { |
| delayed_evtack = |
| list_entry(mrioc->delayed_evtack_cmds_list.next, |
| struct delayed_evt_ack_node, list); |
| mpi3mr_send_event_ack(mrioc, delayed_evtack->event, drv_cmd, |
| delayed_evtack->event_ctx); |
| list_del(&delayed_evtack->list); |
| kfree(delayed_evtack); |
| return; |
| } |
| clear_drv_cmd: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| drv_cmd->callback = NULL; |
| clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap); |
| } |
| |
| /** |
| * mpi3mr_send_event_ack - Issue event acknwoledgment request |
| * @mrioc: Adapter instance reference |
| * @event: MPI3 event id |
| * @cmdparam: Internal command tracker |
| * @event_ctx: event context |
| * |
| * Issues event acknowledgment request to the firmware if there |
| * is a free command to send the event ack else it to a pend |
| * list so that it will be processed on a completion of a prior |
| * event acknowledgment . |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event, |
| struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx) |
| { |
| struct mpi3_event_ack_request evtack_req; |
| int retval = 0; |
| u8 retrycount = 5; |
| u16 cmd_idx = MPI3MR_NUM_EVTACKCMD; |
| struct mpi3mr_drv_cmd *drv_cmd = cmdparam; |
| struct delayed_evt_ack_node *delayed_evtack = NULL; |
| |
| if (drv_cmd) { |
| dprint_event_th(mrioc, |
| "sending delayed event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n", |
| event, event_ctx); |
| goto issue_cmd; |
| } |
| dprint_event_th(mrioc, |
| "sending event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n", |
| event, event_ctx); |
| do { |
| cmd_idx = find_first_zero_bit(mrioc->evtack_cmds_bitmap, |
| MPI3MR_NUM_EVTACKCMD); |
| if (cmd_idx < MPI3MR_NUM_EVTACKCMD) { |
| if (!test_and_set_bit(cmd_idx, |
| mrioc->evtack_cmds_bitmap)) |
| break; |
| cmd_idx = MPI3MR_NUM_EVTACKCMD; |
| } |
| } while (retrycount--); |
| |
| if (cmd_idx >= MPI3MR_NUM_EVTACKCMD) { |
| delayed_evtack = kzalloc(sizeof(*delayed_evtack), |
| GFP_ATOMIC); |
| if (!delayed_evtack) |
| return; |
| INIT_LIST_HEAD(&delayed_evtack->list); |
| delayed_evtack->event = event; |
| delayed_evtack->event_ctx = event_ctx; |
| list_add_tail(&delayed_evtack->list, |
| &mrioc->delayed_evtack_cmds_list); |
| dprint_event_th(mrioc, |
| "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is postponed\n", |
| event, event_ctx); |
| return; |
| } |
| drv_cmd = &mrioc->evtack_cmds[cmd_idx]; |
| |
| issue_cmd: |
| cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN; |
| |
| memset(&evtack_req, 0, sizeof(evtack_req)); |
| if (drv_cmd->state & MPI3MR_CMD_PENDING) { |
| dprint_event_th(mrioc, |
| "sending event ack failed due to command in use\n"); |
| goto out; |
| } |
| drv_cmd->state = MPI3MR_CMD_PENDING; |
| drv_cmd->is_waiting = 0; |
| drv_cmd->callback = mpi3mr_complete_evt_ack; |
| evtack_req.host_tag = cpu_to_le16(drv_cmd->host_tag); |
| evtack_req.function = MPI3_FUNCTION_EVENT_ACK; |
| evtack_req.event = event; |
| evtack_req.event_context = cpu_to_le32(event_ctx); |
| retval = mpi3mr_admin_request_post(mrioc, &evtack_req, |
| sizeof(evtack_req), 1); |
| if (retval) { |
| dprint_event_th(mrioc, |
| "posting event ack request is failed\n"); |
| goto out_failed; |
| } |
| |
| dprint_event_th(mrioc, |
| "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is posted\n", |
| event, event_ctx); |
| out: |
| return; |
| out_failed: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| drv_cmd->callback = NULL; |
| clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap); |
| } |
| |
| /** |
| * mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Checks for the reason code and based on that either block I/O |
| * to device, or unblock I/O to the device, or start the device |
| * removal handshake with reason as remove with the firmware for |
| * PCIe devices. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| struct mpi3_event_data_pcie_topology_change_list *topo_evt = |
| (struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data; |
| int i; |
| u16 handle; |
| u8 reason_code; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; |
| |
| for (i = 0; i < topo_evt->num_entries; i++) { |
| handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| reason_code = topo_evt->port_entry[i].port_status; |
| scsi_tgt_priv_data = NULL; |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) |
| scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) |
| tgtdev->starget->hostdata; |
| switch (reason_code) { |
| case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: |
| if (scsi_tgt_priv_data) { |
| scsi_tgt_priv_data->dev_removed = 1; |
| scsi_tgt_priv_data->dev_removedelay = 0; |
| atomic_set(&scsi_tgt_priv_data->block_io, 0); |
| } |
| mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL, |
| MPI3_CTRL_OP_REMOVE_DEVICE); |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING: |
| if (scsi_tgt_priv_data) { |
| scsi_tgt_priv_data->dev_removedelay = 1; |
| atomic_inc(&scsi_tgt_priv_data->block_io); |
| } |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING: |
| if (scsi_tgt_priv_data && |
| scsi_tgt_priv_data->dev_removedelay) { |
| scsi_tgt_priv_data->dev_removedelay = 0; |
| atomic_dec_if_positive |
| (&scsi_tgt_priv_data->block_io); |
| } |
| break; |
| case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED: |
| default: |
| break; |
| } |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| } |
| |
| /** |
| * mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Checks for the reason code and based on that either block I/O |
| * to device, or unblock I/O to the device, or start the device |
| * removal handshake with reason as remove with the firmware for |
| * SAS/SATA devices. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| struct mpi3_event_data_sas_topology_change_list *topo_evt = |
| (struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data; |
| int i; |
| u16 handle; |
| u8 reason_code; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; |
| |
| for (i = 0; i < topo_evt->num_entries; i++) { |
| handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle); |
| if (!handle) |
| continue; |
| reason_code = topo_evt->phy_entry[i].status & |
| MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; |
| scsi_tgt_priv_data = NULL; |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) |
| scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) |
| tgtdev->starget->hostdata; |
| switch (reason_code) { |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: |
| if (scsi_tgt_priv_data) { |
| scsi_tgt_priv_data->dev_removed = 1; |
| scsi_tgt_priv_data->dev_removedelay = 0; |
| atomic_set(&scsi_tgt_priv_data->block_io, 0); |
| } |
| mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL, |
| MPI3_CTRL_OP_REMOVE_DEVICE); |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING: |
| if (scsi_tgt_priv_data) { |
| scsi_tgt_priv_data->dev_removedelay = 1; |
| atomic_inc(&scsi_tgt_priv_data->block_io); |
| } |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING: |
| if (scsi_tgt_priv_data && |
| scsi_tgt_priv_data->dev_removedelay) { |
| scsi_tgt_priv_data->dev_removedelay = 0; |
| atomic_dec_if_positive |
| (&scsi_tgt_priv_data->block_io); |
| } |
| break; |
| case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED: |
| default: |
| break; |
| } |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| } |
| |
| /** |
| * mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Checks for the reason code and based on that either block I/O |
| * to device, or unblock I/O to the device, or start the device |
| * removal handshake with reason as remove/hide acknowledgment |
| * with the firmware. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| u16 dev_handle = 0; |
| u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; |
| struct mpi3_event_data_device_status_change *evtdata = |
| (struct mpi3_event_data_device_status_change *)event_reply->event_data; |
| |
| if (mrioc->stop_drv_processing) |
| goto out; |
| |
| dev_handle = le16_to_cpu(evtdata->dev_handle); |
| |
| switch (evtdata->reason_code) { |
| case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT: |
| case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT: |
| block = 1; |
| break; |
| case MPI3_EVENT_DEV_STAT_RC_HIDDEN: |
| delete = 1; |
| hide = 1; |
| break; |
| case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING: |
| delete = 1; |
| remove = 1; |
| break; |
| case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP: |
| case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP: |
| ublock = 1; |
| break; |
| default: |
| break; |
| } |
| |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); |
| if (!tgtdev) |
| goto out; |
| if (hide) |
| tgtdev->is_hidden = hide; |
| if (tgtdev->starget && tgtdev->starget->hostdata) { |
| scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) |
| tgtdev->starget->hostdata; |
| if (block) |
| atomic_inc(&scsi_tgt_priv_data->block_io); |
| if (delete) |
| scsi_tgt_priv_data->dev_removed = 1; |
| if (ublock) |
| atomic_dec_if_positive(&scsi_tgt_priv_data->block_io); |
| } |
| if (remove) |
| mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL, |
| MPI3_CTRL_OP_REMOVE_DEVICE); |
| if (hide) |
| mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL, |
| MPI3_CTRL_OP_HIDDEN_ACK); |
| |
| out: |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| |
| /** |
| * mpi3mr_preparereset_evt_th - Prepare for reset event tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Blocks and unblocks host level I/O based on the reason code |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_preparereset_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| struct mpi3_event_data_prepare_for_reset *evtdata = |
| (struct mpi3_event_data_prepare_for_reset *)event_reply->event_data; |
| |
| if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_START) { |
| dprint_event_th(mrioc, |
| "prepare for reset event top half with rc=start\n"); |
| if (mrioc->prepare_for_reset) |
| return; |
| mrioc->prepare_for_reset = 1; |
| mrioc->prepare_for_reset_timeout_counter = 0; |
| } else if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_ABORT) { |
| dprint_event_th(mrioc, |
| "prepare for reset top half with rc=abort\n"); |
| mrioc->prepare_for_reset = 0; |
| mrioc->prepare_for_reset_timeout_counter = 0; |
| } |
| if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK) |
| == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED) |
| mpi3mr_send_event_ack(mrioc, event_reply->event, NULL, |
| le32_to_cpu(event_reply->event_context)); |
| } |
| |
| /** |
| * mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Identifies the new shutdown timeout value and update. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| struct mpi3_event_data_energy_pack_change *evtdata = |
| (struct mpi3_event_data_energy_pack_change *)event_reply->event_data; |
| u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout); |
| |
| if (shutdown_timeout <= 0) { |
| ioc_warn(mrioc, |
| "%s :Invalid Shutdown Timeout received = %d\n", |
| __func__, shutdown_timeout); |
| return; |
| } |
| |
| ioc_info(mrioc, |
| "%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n", |
| __func__, mrioc->facts.shutdown_timeout, shutdown_timeout); |
| mrioc->facts.shutdown_timeout = shutdown_timeout; |
| } |
| |
| /** |
| * mpi3mr_cablemgmt_evt_th - Cable management event tophalf |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Displays Cable manegemt event details. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_cablemgmt_evt_th(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| struct mpi3_event_data_cable_management *evtdata = |
| (struct mpi3_event_data_cable_management *)event_reply->event_data; |
| |
| switch (evtdata->status) { |
| case MPI3_EVENT_CABLE_MGMT_STATUS_INSUFFICIENT_POWER: |
| { |
| ioc_info(mrioc, "An active cable with receptacle_id %d cannot be powered.\n" |
| "Devices connected to this cable are not detected.\n" |
| "This cable requires %d mW of power.\n", |
| evtdata->receptacle_id, |
| le32_to_cpu(evtdata->active_cable_power_requirement)); |
| break; |
| } |
| case MPI3_EVENT_CABLE_MGMT_STATUS_DEGRADED: |
| { |
| ioc_info(mrioc, "A cable with receptacle_id %d is not running at optimal speed\n", |
| evtdata->receptacle_id); |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * mpi3mr_os_handle_events - Firmware event handler |
| * @mrioc: Adapter instance reference |
| * @event_reply: event data |
| * |
| * Identify whteher the event has to handled and acknowledged |
| * and either process the event in the tophalf and/or schedule a |
| * bottom half through mpi3mr_fwevt_worker. |
| * |
| * Return: Nothing |
| */ |
| void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc, |
| struct mpi3_event_notification_reply *event_reply) |
| { |
| u16 evt_type, sz; |
| struct mpi3mr_fwevt *fwevt = NULL; |
| bool ack_req = 0, process_evt_bh = 0; |
| |
| if (mrioc->stop_drv_processing) |
| return; |
| |
| if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK) |
| == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED) |
| ack_req = 1; |
| |
| evt_type = event_reply->event; |
| |
| switch (evt_type) { |
| case MPI3_EVENT_DEVICE_ADDED: |
| { |
| struct mpi3_device_page0 *dev_pg0 = |
| (struct mpi3_device_page0 *)event_reply->event_data; |
| if (mpi3mr_create_tgtdev(mrioc, dev_pg0)) |
| ioc_err(mrioc, |
| "%s :Failed to add device in the device add event\n", |
| __func__); |
| else |
| process_evt_bh = 1; |
| break; |
| } |
| case MPI3_EVENT_DEVICE_STATUS_CHANGE: |
| { |
| process_evt_bh = 1; |
| mpi3mr_devstatuschg_evt_th(mrioc, event_reply); |
| break; |
| } |
| case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST: |
| { |
| process_evt_bh = 1; |
| mpi3mr_sastopochg_evt_th(mrioc, event_reply); |
| break; |
| } |
| case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: |
| { |
| process_evt_bh = 1; |
| mpi3mr_pcietopochg_evt_th(mrioc, event_reply); |
| break; |
| } |
| case MPI3_EVENT_PREPARE_FOR_RESET: |
| { |
| mpi3mr_preparereset_evt_th(mrioc, event_reply); |
| ack_req = 0; |
| break; |
| } |
| case MPI3_EVENT_DEVICE_INFO_CHANGED: |
| case MPI3_EVENT_LOG_DATA: |
| { |
| process_evt_bh = 1; |
| break; |
| } |
| case MPI3_EVENT_ENERGY_PACK_CHANGE: |
| { |
| mpi3mr_energypackchg_evt_th(mrioc, event_reply); |
| break; |
| } |
| case MPI3_EVENT_CABLE_MGMT: |
| { |
| mpi3mr_cablemgmt_evt_th(mrioc, event_reply); |
| break; |
| } |
| case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE: |
| case MPI3_EVENT_SAS_DISCOVERY: |
| case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR: |
| case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE: |
| case MPI3_EVENT_PCIE_ENUMERATION: |
| break; |
| default: |
| ioc_info(mrioc, "%s :event 0x%02x is not handled\n", |
| __func__, evt_type); |
| break; |
| } |
| if (process_evt_bh || ack_req) { |
| sz = event_reply->event_data_length * 4; |
| fwevt = mpi3mr_alloc_fwevt(sz); |
| if (!fwevt) { |
| ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n", |
| __func__, __FILE__, __LINE__, __func__); |
| return; |
| } |
| |
| memcpy(fwevt->event_data, event_reply->event_data, sz); |
| fwevt->mrioc = mrioc; |
| fwevt->event_id = evt_type; |
| fwevt->send_ack = ack_req; |
| fwevt->process_evt = process_evt_bh; |
| fwevt->evt_ctx = le32_to_cpu(event_reply->event_context); |
| mpi3mr_fwevt_add_to_list(mrioc, fwevt); |
| } |
| } |
| |
| /** |
| * mpi3mr_setup_eedp - Setup EEDP information in MPI3 SCSI IO |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI command reference |
| * @scsiio_req: MPI3 SCSI IO request |
| * |
| * Identifies the protection information flags from the SCSI |
| * command and set appropriate flags in the MPI3 SCSI IO |
| * request. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) |
| { |
| u16 eedp_flags = 0; |
| unsigned char prot_op = scsi_get_prot_op(scmd); |
| |
| switch (prot_op) { |
| case SCSI_PROT_NORMAL: |
| return; |
| case SCSI_PROT_READ_STRIP: |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE; |
| break; |
| case SCSI_PROT_WRITE_INSERT: |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT; |
| break; |
| case SCSI_PROT_READ_INSERT: |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT; |
| scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; |
| break; |
| case SCSI_PROT_WRITE_STRIP: |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE; |
| scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; |
| break; |
| case SCSI_PROT_READ_PASS: |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK; |
| scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; |
| break; |
| case SCSI_PROT_WRITE_PASS: |
| if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) { |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN; |
| scsiio_req->sgl[0].eedp.application_tag_translation_mask = |
| 0xffff; |
| } else |
| eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK; |
| |
| scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; |
| break; |
| default: |
| return; |
| } |
| |
| if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK) |
| eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD; |
| |
| if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) |
| eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM; |
| |
| if (scmd->prot_flags & SCSI_PROT_REF_CHECK) { |
| eedp_flags |= MPI3_EEDPFLAGS_CHK_REF_TAG | |
| MPI3_EEDPFLAGS_INCR_PRI_REF_TAG; |
| scsiio_req->cdb.eedp32.primary_reference_tag = |
| cpu_to_be32(scsi_prot_ref_tag(scmd)); |
| } |
| |
| if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT) |
| eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG; |
| |
| eedp_flags |= MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE; |
| |
| switch (scsi_prot_interval(scmd)) { |
| case 512: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512; |
| break; |
| case 520: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520; |
| break; |
| case 4080: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080; |
| break; |
| case 4088: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088; |
| break; |
| case 4096: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096; |
| break; |
| case 4104: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104; |
| break; |
| case 4160: |
| scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160; |
| break; |
| default: |
| break; |
| } |
| |
| scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags); |
| scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED; |
| } |
| |
| /** |
| * mpi3mr_build_sense_buffer - Map sense information |
| * @desc: Sense type |
| * @buf: Sense buffer to populate |
| * @key: Sense key |
| * @asc: Additional sense code |
| * @ascq: Additional sense code qualifier |
| * |
| * Maps the given sense information into either descriptor or |
| * fixed format sense data. |
| * |
| * Return: Nothing |
| */ |
| static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key, |
| u8 asc, u8 ascq) |
| { |
| if (desc) { |
| buf[0] = 0x72; /* descriptor, current */ |
| buf[1] = key; |
| buf[2] = asc; |
| buf[3] = ascq; |
| buf[7] = 0; |
| } else { |
| buf[0] = 0x70; /* fixed, current */ |
| buf[2] = key; |
| buf[7] = 0xa; |
| buf[12] = asc; |
| buf[13] = ascq; |
| } |
| } |
| |
| /** |
| * mpi3mr_map_eedp_error - Map EEDP errors from IOC status |
| * @scmd: SCSI command reference |
| * @ioc_status: status of MPI3 request |
| * |
| * Maps the EEDP error status of the SCSI IO request to sense |
| * data. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd, |
| u16 ioc_status) |
| { |
| u8 ascq = 0; |
| |
| switch (ioc_status) { |
| case MPI3_IOCSTATUS_EEDP_GUARD_ERROR: |
| ascq = 0x01; |
| break; |
| case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR: |
| ascq = 0x02; |
| break; |
| case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR: |
| ascq = 0x03; |
| break; |
| default: |
| ascq = 0x00; |
| break; |
| } |
| |
| mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, |
| 0x10, ascq); |
| scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; |
| } |
| |
| /** |
| * mpi3mr_process_op_reply_desc - reply descriptor handler |
| * @mrioc: Adapter instance reference |
| * @reply_desc: Operational reply descriptor |
| * @reply_dma: place holder for reply DMA address |
| * @qidx: Operational queue index |
| * |
| * Process the operational reply descriptor and identifies the |
| * descriptor type. Based on the descriptor map the MPI3 request |
| * status to a SCSI command status and calls scsi_done call |
| * back. |
| * |
| * Return: Nothing |
| */ |
| void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc, |
| struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx) |
| { |
| u16 reply_desc_type, host_tag = 0; |
| u16 ioc_status = MPI3_IOCSTATUS_SUCCESS; |
| u32 ioc_loginfo = 0; |
| struct mpi3_status_reply_descriptor *status_desc = NULL; |
| struct mpi3_address_reply_descriptor *addr_desc = NULL; |
| struct mpi3_success_reply_descriptor *success_desc = NULL; |
| struct mpi3_scsi_io_reply *scsi_reply = NULL; |
| struct scsi_cmnd *scmd = NULL; |
| struct scmd_priv *priv = NULL; |
| u8 *sense_buf = NULL; |
| u8 scsi_state = 0, scsi_status = 0, sense_state = 0; |
| u32 xfer_count = 0, sense_count = 0, resp_data = 0; |
| u16 dev_handle = 0xFFFF; |
| struct scsi_sense_hdr sshdr; |
| struct mpi3mr_stgt_priv_data *stgt_priv_data = NULL; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL; |
| u32 ioc_pend_data_len = 0, tg_pend_data_len = 0, data_len_blks = 0; |
| struct mpi3mr_throttle_group_info *tg = NULL; |
| u8 throttle_enabled_dev = 0; |
| |
| *reply_dma = 0; |
| reply_desc_type = le16_to_cpu(reply_desc->reply_flags) & |
| MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK; |
| switch (reply_desc_type) { |
| case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS: |
| status_desc = (struct mpi3_status_reply_descriptor *)reply_desc; |
| host_tag = le16_to_cpu(status_desc->host_tag); |
| ioc_status = le16_to_cpu(status_desc->ioc_status); |
| if (ioc_status & |
| MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) |
| ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info); |
| ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; |
| break; |
| case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY: |
| addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc; |
| *reply_dma = le64_to_cpu(addr_desc->reply_frame_address); |
| scsi_reply = mpi3mr_get_reply_virt_addr(mrioc, |
| *reply_dma); |
| if (!scsi_reply) { |
| panic("%s: scsi_reply is NULL, this shouldn't happen\n", |
| mrioc->name); |
| goto out; |
| } |
| host_tag = le16_to_cpu(scsi_reply->host_tag); |
| ioc_status = le16_to_cpu(scsi_reply->ioc_status); |
| scsi_status = scsi_reply->scsi_status; |
| scsi_state = scsi_reply->scsi_state; |
| dev_handle = le16_to_cpu(scsi_reply->dev_handle); |
| sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK); |
| xfer_count = le32_to_cpu(scsi_reply->transfer_count); |
| sense_count = le32_to_cpu(scsi_reply->sense_count); |
| resp_data = le32_to_cpu(scsi_reply->response_data); |
| sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc, |
| le64_to_cpu(scsi_reply->sense_data_buffer_address)); |
| if (ioc_status & |
| MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) |
| ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info); |
| ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; |
| if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY) |
| panic("%s: Ran out of sense buffers\n", mrioc->name); |
| break; |
| case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS: |
| success_desc = (struct mpi3_success_reply_descriptor *)reply_desc; |
| host_tag = le16_to_cpu(success_desc->host_tag); |
| break; |
| default: |
| break; |
| } |
| scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx); |
| if (!scmd) { |
| panic("%s: Cannot Identify scmd for host_tag 0x%x\n", |
| mrioc->name, host_tag); |
| goto out; |
| } |
| priv = scsi_cmd_priv(scmd); |
| |
| data_len_blks = scsi_bufflen(scmd) >> 9; |
| sdev_priv_data = scmd->device->hostdata; |
| if (sdev_priv_data) { |
| stgt_priv_data = sdev_priv_data->tgt_priv_data; |
| if (stgt_priv_data) { |
| tg = stgt_priv_data->throttle_group; |
| throttle_enabled_dev = |
| stgt_priv_data->io_throttle_enabled; |
| } |
| } |
| if (unlikely((data_len_blks >= mrioc->io_throttle_data_length) && |
| throttle_enabled_dev)) { |
| ioc_pend_data_len = atomic_sub_return(data_len_blks, |
| &mrioc->pend_large_data_sz); |
| if (tg) { |
| tg_pend_data_len = atomic_sub_return(data_len_blks, |
| &tg->pend_large_data_sz); |
| if (tg->io_divert && ((ioc_pend_data_len <= |
| mrioc->io_throttle_low) && |
| (tg_pend_data_len <= tg->low))) { |
| tg->io_divert = 0; |
| mpi3mr_set_io_divert_for_all_vd_in_tg( |
| mrioc, tg, 0); |
| } |
| } else { |
| if (ioc_pend_data_len <= mrioc->io_throttle_low) |
| stgt_priv_data->io_divert = 0; |
| } |
| } else if (unlikely((stgt_priv_data && stgt_priv_data->io_divert))) { |
| ioc_pend_data_len = atomic_read(&mrioc->pend_large_data_sz); |
| if (!tg) { |
| if (ioc_pend_data_len <= mrioc->io_throttle_low) |
| stgt_priv_data->io_divert = 0; |
| |
| } else if (ioc_pend_data_len <= mrioc->io_throttle_low) { |
| tg_pend_data_len = atomic_read(&tg->pend_large_data_sz); |
| if (tg->io_divert && (tg_pend_data_len <= tg->low)) { |
| tg->io_divert = 0; |
| mpi3mr_set_io_divert_for_all_vd_in_tg( |
| mrioc, tg, 0); |
| } |
| } |
| } |
| |
| if (success_desc) { |
| scmd->result = DID_OK << 16; |
| goto out_success; |
| } |
| |
| scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_count); |
| if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN && |
| xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY || |
| scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT || |
| scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL)) |
| ioc_status = MPI3_IOCSTATUS_SUCCESS; |
| |
| if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count && |
| sense_buf) { |
| u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count); |
| |
| memcpy(scmd->sense_buffer, sense_buf, sz); |
| } |
| |
| switch (ioc_status) { |
| case MPI3_IOCSTATUS_BUSY: |
| case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES: |
| scmd->result = SAM_STAT_BUSY; |
| break; |
| case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE: |
| scmd->result = DID_NO_CONNECT << 16; |
| break; |
| case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED: |
| scmd->result = DID_SOFT_ERROR << 16; |
| break; |
| case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED: |
| case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED: |
| scmd->result = DID_RESET << 16; |
| break; |
| case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH: |
| if ((xfer_count == 0) || (scmd->underflow > xfer_count)) |
| scmd->result = DID_SOFT_ERROR << 16; |
| else |
| scmd->result = (DID_OK << 16) | scsi_status; |
| break; |
| case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN: |
| scmd->result = (DID_OK << 16) | scsi_status; |
| if (sense_state == MPI3_SCSI_STATE_SENSE_VALID) |
| break; |
| if (xfer_count < scmd->underflow) { |
| if (scsi_status == SAM_STAT_BUSY) |
| scmd->result = SAM_STAT_BUSY; |
| else |
| scmd->result = DID_SOFT_ERROR << 16; |
| } else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) || |
| (sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE)) |
| scmd->result = DID_SOFT_ERROR << 16; |
| else if (scsi_state & MPI3_SCSI_STATE_TERMINATED) |
| scmd->result = DID_RESET << 16; |
| break; |
| case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN: |
| scsi_set_resid(scmd, 0); |
| fallthrough; |
| case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR: |
| case MPI3_IOCSTATUS_SUCCESS: |
| scmd->result = (DID_OK << 16) | scsi_status; |
| if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) || |
| (sense_state == MPI3_SCSI_STATE_SENSE_FAILED) || |
| (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)) |
| scmd->result = DID_SOFT_ERROR << 16; |
| else if (scsi_state & MPI3_SCSI_STATE_TERMINATED) |
| scmd->result = DID_RESET << 16; |
| break; |
| case MPI3_IOCSTATUS_EEDP_GUARD_ERROR: |
| case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR: |
| case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR: |
| mpi3mr_map_eedp_error(scmd, ioc_status); |
| break; |
| case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR: |
| case MPI3_IOCSTATUS_INVALID_FUNCTION: |
| case MPI3_IOCSTATUS_INVALID_SGL: |
| case MPI3_IOCSTATUS_INTERNAL_ERROR: |
| case MPI3_IOCSTATUS_INVALID_FIELD: |
| case MPI3_IOCSTATUS_INVALID_STATE: |
| case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR: |
| case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED: |
| case MPI3_IOCSTATUS_INSUFFICIENT_POWER: |
| default: |
| scmd->result = DID_SOFT_ERROR << 16; |
| break; |
| } |
| |
| if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) && |
| (scmd->cmnd[0] != ATA_16)) { |
| ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__, |
| scmd->result); |
| scsi_print_command(scmd); |
| ioc_info(mrioc, |
| "%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n", |
| __func__, dev_handle, ioc_status, ioc_loginfo, |
| priv->req_q_idx + 1); |
| ioc_info(mrioc, |
| " host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n", |
| host_tag, scsi_state, scsi_status, xfer_count, resp_data); |
| if (sense_buf) { |
| scsi_normalize_sense(sense_buf, sense_count, &sshdr); |
| ioc_info(mrioc, |
| "%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n", |
| __func__, sense_count, sshdr.sense_key, |
| sshdr.asc, sshdr.ascq); |
| } |
| } |
| out_success: |
| if (priv->meta_sg_valid) { |
| dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd), |
| scsi_prot_sg_count(scmd), scmd->sc_data_direction); |
| } |
| mpi3mr_clear_scmd_priv(mrioc, scmd); |
| scsi_dma_unmap(scmd); |
| scsi_done(scmd); |
| out: |
| if (sense_buf) |
| mpi3mr_repost_sense_buf(mrioc, |
| le64_to_cpu(scsi_reply->sense_data_buffer_address)); |
| } |
| |
| /** |
| * mpi3mr_get_chain_idx - get free chain buffer index |
| * @mrioc: Adapter instance reference |
| * |
| * Try to get a free chain buffer index from the free pool. |
| * |
| * Return: -1 on failure or the free chain buffer index |
| */ |
| static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc) |
| { |
| u8 retry_count = 5; |
| int cmd_idx = -1; |
| |
| do { |
| spin_lock(&mrioc->chain_buf_lock); |
| cmd_idx = find_first_zero_bit(mrioc->chain_bitmap, |
| mrioc->chain_buf_count); |
| if (cmd_idx < mrioc->chain_buf_count) { |
| set_bit(cmd_idx, mrioc->chain_bitmap); |
| spin_unlock(&mrioc->chain_buf_lock); |
| break; |
| } |
| spin_unlock(&mrioc->chain_buf_lock); |
| cmd_idx = -1; |
| } while (retry_count--); |
| return cmd_idx; |
| } |
| |
| /** |
| * mpi3mr_prepare_sg_scmd - build scatter gather list |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI command reference |
| * @scsiio_req: MPI3 SCSI IO request |
| * |
| * This function maps SCSI command's data and protection SGEs to |
| * MPI request SGEs. If required additional 4K chain buffer is |
| * used to send the SGEs. |
| * |
| * Return: 0 on success, -ENOMEM on dma_map_sg failure |
| */ |
| static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) |
| { |
| dma_addr_t chain_dma; |
| struct scatterlist *sg_scmd; |
| void *sg_local, *chain; |
| u32 chain_length; |
| int sges_left, chain_idx; |
| u32 sges_in_segment; |
| u8 simple_sgl_flags; |
| u8 simple_sgl_flags_last; |
| u8 last_chain_sgl_flags; |
| struct chain_element *chain_req; |
| struct scmd_priv *priv = NULL; |
| u32 meta_sg = le32_to_cpu(scsiio_req->flags) & |
| MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI; |
| |
| priv = scsi_cmd_priv(scmd); |
| |
| simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE | |
| MPI3_SGE_FLAGS_DLAS_SYSTEM; |
| simple_sgl_flags_last = simple_sgl_flags | |
| MPI3_SGE_FLAGS_END_OF_LIST; |
| last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN | |
| MPI3_SGE_FLAGS_DLAS_SYSTEM; |
| |
| if (meta_sg) |
| sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX]; |
| else |
| sg_local = &scsiio_req->sgl; |
| |
| if (!scsiio_req->data_length && !meta_sg) { |
| mpi3mr_build_zero_len_sge(sg_local); |
| return 0; |
| } |
| |
| if (meta_sg) { |
| sg_scmd = scsi_prot_sglist(scmd); |
| sges_left = dma_map_sg(&mrioc->pdev->dev, |
| scsi_prot_sglist(scmd), |
| scsi_prot_sg_count(scmd), |
| scmd->sc_data_direction); |
| priv->meta_sg_valid = 1; /* To unmap meta sg DMA */ |
| } else { |
| sg_scmd = scsi_sglist(scmd); |
| sges_left = scsi_dma_map(scmd); |
| } |
| |
| if (sges_left < 0) { |
| sdev_printk(KERN_ERR, scmd->device, |
| "scsi_dma_map failed: request for %d bytes!\n", |
| scsi_bufflen(scmd)); |
| return -ENOMEM; |
| } |
| if (sges_left > MPI3MR_SG_DEPTH) { |
| sdev_printk(KERN_ERR, scmd->device, |
| "scsi_dma_map returned unsupported sge count %d!\n", |
| sges_left); |
| return -ENOMEM; |
| } |
| |
| sges_in_segment = (mrioc->facts.op_req_sz - |
| offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common); |
| |
| if (scsiio_req->sgl[0].eedp.flags == |
| MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) { |
| sg_local += sizeof(struct mpi3_sge_common); |
| sges_in_segment--; |
| /* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */ |
| } |
| |
| if (scsiio_req->msg_flags == |
| MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) { |
| sges_in_segment--; |
| /* Reserve last segment (scsiio_req->sgl[3]) for meta sg */ |
| } |
| |
| if (meta_sg) |
| sges_in_segment = 1; |
| |
| if (sges_left <= sges_in_segment) |
| goto fill_in_last_segment; |
| |
| /* fill in main message segment when there is a chain following */ |
| while (sges_in_segment > 1) { |
| mpi3mr_add_sg_single(sg_local, simple_sgl_flags, |
| sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); |
| sg_scmd = sg_next(sg_scmd); |
| sg_local += sizeof(struct mpi3_sge_common); |
| sges_left--; |
| sges_in_segment--; |
| } |
| |
| chain_idx = mpi3mr_get_chain_idx(mrioc); |
| if (chain_idx < 0) |
| return -1; |
| chain_req = &mrioc->chain_sgl_list[chain_idx]; |
| if (meta_sg) |
| priv->meta_chain_idx = chain_idx; |
| else |
| priv->chain_idx = chain_idx; |
| |
| chain = chain_req->addr; |
| chain_dma = chain_req->dma_addr; |
| sges_in_segment = sges_left; |
| chain_length = sges_in_segment * sizeof(struct mpi3_sge_common); |
| |
| mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags, |
| chain_length, chain_dma); |
| |
| sg_local = chain; |
| |
| fill_in_last_segment: |
| while (sges_left > 0) { |
| if (sges_left == 1) |
| mpi3mr_add_sg_single(sg_local, |
| simple_sgl_flags_last, sg_dma_len(sg_scmd), |
| sg_dma_address(sg_scmd)); |
| else |
| mpi3mr_add_sg_single(sg_local, simple_sgl_flags, |
| sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); |
| sg_scmd = sg_next(sg_scmd); |
| sg_local += sizeof(struct mpi3_sge_common); |
| sges_left--; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI command reference |
| * @scsiio_req: MPI3 SCSI IO request |
| * |
| * This function calls mpi3mr_prepare_sg_scmd for constructing |
| * both data SGEs and protection information SGEs in the MPI |
| * format from the SCSI Command as appropriate . |
| * |
| * Return: return value of mpi3mr_prepare_sg_scmd. |
| */ |
| static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) |
| { |
| int ret; |
| |
| ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req); |
| if (ret) |
| return ret; |
| |
| if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) { |
| /* There is a valid meta sg */ |
| scsiio_req->flags |= |
| cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI); |
| ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * mpi3mr_tm_response_name - get TM response as a string |
| * @resp_code: TM response code |
| * |
| * Convert known task management response code as a readable |
| * string. |
| * |
| * Return: response code string. |
| */ |
| static const char *mpi3mr_tm_response_name(u8 resp_code) |
| { |
| char *desc; |
| |
| switch (resp_code) { |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE: |
| desc = "task management request completed"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_INVALID_FRAME: |
| desc = "invalid frame"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_FUNCTION_NOT_SUPPORTED: |
| desc = "task management request not supported"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_FAILED: |
| desc = "task management request failed"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED: |
| desc = "task management request succeeded"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_INVALID_LUN: |
| desc = "invalid LUN"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_OVERLAPPED_TAG: |
| desc = "overlapped tag attempted"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC: |
| desc = "task queued, however not sent to target"; |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_NVME_DENIED: |
| desc = "task management request denied by NVMe device"; |
| break; |
| default: |
| desc = "unknown"; |
| break; |
| } |
| |
| return desc; |
| } |
| |
| inline void mpi3mr_poll_pend_io_completions(struct mpi3mr_ioc *mrioc) |
| { |
| int i; |
| int num_of_reply_queues = |
| mrioc->num_op_reply_q + mrioc->op_reply_q_offset; |
| |
| for (i = mrioc->op_reply_q_offset; i < num_of_reply_queues; i++) |
| mpi3mr_process_op_reply_q(mrioc, |
| mrioc->intr_info[i].op_reply_q); |
| } |
| |
| /** |
| * mpi3mr_issue_tm - Issue Task Management request |
| * @mrioc: Adapter instance reference |
| * @tm_type: Task Management type |
| * @handle: Device handle |
| * @lun: lun ID |
| * @htag: Host tag of the TM request |
| * @timeout: TM timeout value |
| * @drv_cmd: Internal command tracker |
| * @resp_code: Response code place holder |
| * @scmd: SCSI command |
| * |
| * Issues a Task Management Request to the controller for a |
| * specified target, lun and command and wait for its completion |
| * and check TM response. Recover the TM if it timed out by |
| * issuing controller reset. |
| * |
| * Return: 0 on success, non-zero on errors |
| */ |
| int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type, |
| u16 handle, uint lun, u16 htag, ulong timeout, |
| struct mpi3mr_drv_cmd *drv_cmd, |
| u8 *resp_code, struct scsi_cmnd *scmd) |
| { |
| struct mpi3_scsi_task_mgmt_request tm_req; |
| struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL; |
| int retval = 0; |
| struct mpi3mr_tgt_dev *tgtdev = NULL; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; |
| struct scmd_priv *cmd_priv = NULL; |
| struct scsi_device *sdev = NULL; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL; |
| |
| ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n", |
| __func__, tm_type, handle); |
| if (mrioc->unrecoverable) { |
| retval = -1; |
| ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n", |
| __func__); |
| goto out; |
| } |
| |
| memset(&tm_req, 0, sizeof(tm_req)); |
| mutex_lock(&drv_cmd->mutex); |
| if (drv_cmd->state & MPI3MR_CMD_PENDING) { |
| retval = -1; |
| ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__); |
| mutex_unlock(&drv_cmd->mutex); |
| goto out; |
| } |
| if (mrioc->reset_in_progress) { |
| retval = -1; |
| ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__); |
| mutex_unlock(&drv_cmd->mutex); |
| goto out; |
| } |
| |
| drv_cmd->state = MPI3MR_CMD_PENDING; |
| drv_cmd->is_waiting = 1; |
| drv_cmd->callback = NULL; |
| tm_req.dev_handle = cpu_to_le16(handle); |
| tm_req.task_type = tm_type; |
| tm_req.host_tag = cpu_to_le16(htag); |
| |
| int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun); |
| tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT; |
| |
| tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); |
| |
| if (scmd) { |
| sdev = scmd->device; |
| sdev_priv_data = sdev->hostdata; |
| scsi_tgt_priv_data = ((sdev_priv_data) ? |
| sdev_priv_data->tgt_priv_data : NULL); |
| } else { |
| if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) |
| scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) |
| tgtdev->starget->hostdata; |
| } |
| |
| if (scsi_tgt_priv_data) |
| atomic_inc(&scsi_tgt_priv_data->block_io); |
| |
| if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) { |
| if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to) |
| timeout = tgtdev->dev_spec.pcie_inf.abort_to; |
| else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to) |
| timeout = tgtdev->dev_spec.pcie_inf.reset_to; |
| } |
| |
| init_completion(&drv_cmd->done); |
| retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1); |
| if (retval) { |
| ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__); |
| goto out_unlock; |
| } |
| wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ)); |
| |
| if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) { |
| drv_cmd->is_waiting = 0; |
| retval = -1; |
| if (!(drv_cmd->state & MPI3MR_CMD_RESET)) { |
| dprint_tm(mrioc, |
| "task management request timed out after %ld seconds\n", |
| timeout); |
| if (mrioc->logging_level & MPI3_DEBUG_TM) |
| dprint_dump_req(&tm_req, sizeof(tm_req)/4); |
| mpi3mr_soft_reset_handler(mrioc, |
| MPI3MR_RESET_FROM_TM_TIMEOUT, 1); |
| } |
| goto out_unlock; |
| } |
| |
| if (!(drv_cmd->state & MPI3MR_CMD_REPLY_VALID)) { |
| dprint_tm(mrioc, "invalid task management reply message\n"); |
| retval = -1; |
| goto out_unlock; |
| } |
| |
| tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply; |
| |
| switch (drv_cmd->ioc_status) { |
| case MPI3_IOCSTATUS_SUCCESS: |
| *resp_code = le32_to_cpu(tm_reply->response_data) & |
| MPI3MR_RI_MASK_RESPCODE; |
| break; |
| case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED: |
| *resp_code = MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE; |
| break; |
| default: |
| dprint_tm(mrioc, |
| "task management request to handle(0x%04x) is failed with ioc_status(0x%04x) log_info(0x%08x)\n", |
| handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo); |
| retval = -1; |
| goto out_unlock; |
| } |
| |
| switch (*resp_code) { |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED: |
| case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE: |
| break; |
| case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC: |
| if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK) |
| retval = -1; |
| break; |
| default: |
| retval = -1; |
| break; |
| } |
| |
| dprint_tm(mrioc, |
| "task management request type(%d) completed for handle(0x%04x) with ioc_status(0x%04x), log_info(0x%08x), termination_count(%d), response:%s(0x%x)\n", |
| tm_type, handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo, |
| le32_to_cpu(tm_reply->termination_count), |
| mpi3mr_tm_response_name(*resp_code), *resp_code); |
| |
| if (!retval) { |
| mpi3mr_ioc_disable_intr(mrioc); |
| mpi3mr_poll_pend_io_completions(mrioc); |
| mpi3mr_ioc_enable_intr(mrioc); |
| mpi3mr_poll_pend_io_completions(mrioc); |
| } |
| switch (tm_type) { |
| case MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET: |
| if (!scsi_tgt_priv_data) |
| break; |
| scsi_tgt_priv_data->pend_count = 0; |
| blk_mq_tagset_busy_iter(&mrioc->shost->tag_set, |
| mpi3mr_count_tgt_pending, |
| (void *)scsi_tgt_priv_data->starget); |
| break; |
| case MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET: |
| if (!sdev_priv_data) |
| break; |
| sdev_priv_data->pend_count = 0; |
| blk_mq_tagset_busy_iter(&mrioc->shost->tag_set, |
| mpi3mr_count_dev_pending, (void *)sdev); |
| break; |
| default: |
| break; |
| } |
| |
| out_unlock: |
| drv_cmd->state = MPI3MR_CMD_NOTUSED; |
| mutex_unlock(&drv_cmd->mutex); |
| if (scsi_tgt_priv_data) |
| atomic_dec_if_positive(&scsi_tgt_priv_data->block_io); |
| if (tgtdev) |
| mpi3mr_tgtdev_put(tgtdev); |
| out: |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_bios_param - BIOS param callback |
| * @sdev: SCSI device reference |
| * @bdev: Block device reference |
| * @capacity: Capacity in logical sectors |
| * @params: Parameter array |
| * |
| * Just the parameters with heads/secots/cylinders. |
| * |
| * Return: 0 always |
| */ |
| static int mpi3mr_bios_param(struct scsi_device *sdev, |
| struct block_device *bdev, sector_t capacity, int params[]) |
| { |
| int heads; |
| int sectors; |
| sector_t cylinders; |
| ulong dummy; |
| |
| heads = 64; |
| sectors = 32; |
| |
| dummy = heads * sectors; |
| cylinders = capacity; |
| sector_div(cylinders, dummy); |
| |
| if ((ulong)capacity >= 0x200000) { |
| heads = 255; |
| sectors = 63; |
| dummy = heads * sectors; |
| cylinders = capacity; |
| sector_div(cylinders, dummy); |
| } |
| |
| params[0] = heads; |
| params[1] = sectors; |
| params[2] = cylinders; |
| return 0; |
| } |
| |
| /** |
| * mpi3mr_map_queues - Map queues callback handler |
| * @shost: SCSI host reference |
| * |
| * Maps default and poll queues. |
| * |
| * Return: return zero. |
| */ |
| static void mpi3mr_map_queues(struct Scsi_Host *shost) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(shost); |
| int i, qoff, offset; |
| struct blk_mq_queue_map *map = NULL; |
| |
| offset = mrioc->op_reply_q_offset; |
| |
| for (i = 0, qoff = 0; i < HCTX_MAX_TYPES; i++) { |
| map = &shost->tag_set.map[i]; |
| |
| map->nr_queues = 0; |
| |
| if (i == HCTX_TYPE_DEFAULT) |
| map->nr_queues = mrioc->default_qcount; |
| else if (i == HCTX_TYPE_POLL) |
| map->nr_queues = mrioc->active_poll_qcount; |
| |
| if (!map->nr_queues) { |
| BUG_ON(i == HCTX_TYPE_DEFAULT); |
| continue; |
| } |
| |
| /* |
| * The poll queue(s) doesn't have an IRQ (and hence IRQ |
| * affinity), so use the regular blk-mq cpu mapping |
| */ |
| map->queue_offset = qoff; |
| if (i != HCTX_TYPE_POLL) |
| blk_mq_pci_map_queues(map, mrioc->pdev, offset); |
| else |
| blk_mq_map_queues(map); |
| |
| qoff += map->nr_queues; |
| offset += map->nr_queues; |
| } |
| } |
| |
| /** |
| * mpi3mr_get_fw_pending_ios - Calculate pending I/O count |
| * @mrioc: Adapter instance reference |
| * |
| * Calculate the pending I/Os for the controller and return. |
| * |
| * Return: Number of pending I/Os |
| */ |
| static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc) |
| { |
| u16 i; |
| uint pend_ios = 0; |
| |
| for (i = 0; i < mrioc->num_op_reply_q; i++) |
| pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios); |
| return pend_ios; |
| } |
| |
| /** |
| * mpi3mr_print_pending_host_io - print pending I/Os |
| * @mrioc: Adapter instance reference |
| * |
| * Print number of pending I/Os and each I/O details prior to |
| * reset for debug purpose. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc) |
| { |
| struct Scsi_Host *shost = mrioc->shost; |
| |
| ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n", |
| __func__, mpi3mr_get_fw_pending_ios(mrioc)); |
| blk_mq_tagset_busy_iter(&shost->tag_set, |
| mpi3mr_print_scmd, (void *)mrioc); |
| } |
| |
| /** |
| * mpi3mr_wait_for_host_io - block for I/Os to complete |
| * @mrioc: Adapter instance reference |
| * @timeout: time out in seconds |
| * Waits for pending I/Os for the given adapter to complete or |
| * to hit the timeout. |
| * |
| * Return: Nothing |
| */ |
| void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout) |
| { |
| enum mpi3mr_iocstate iocstate; |
| int i = 0; |
| |
| iocstate = mpi3mr_get_iocstate(mrioc); |
| if (iocstate != MRIOC_STATE_READY) |
| return; |
| |
| if (!mpi3mr_get_fw_pending_ios(mrioc)) |
| return; |
| ioc_info(mrioc, |
| "%s :Waiting for %d seconds prior to reset for %d I/O\n", |
| __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc)); |
| |
| for (i = 0; i < timeout; i++) { |
| if (!mpi3mr_get_fw_pending_ios(mrioc)) |
| break; |
| iocstate = mpi3mr_get_iocstate(mrioc); |
| if (iocstate != MRIOC_STATE_READY) |
| break; |
| msleep(1000); |
| } |
| |
| ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__, |
| mpi3mr_get_fw_pending_ios(mrioc)); |
| } |
| |
| /** |
| * mpi3mr_eh_host_reset - Host reset error handling callback |
| * @scmd: SCSI command reference |
| * |
| * Issue controller reset if the scmd is for a Physical Device, |
| * if the scmd is for RAID volume, then wait for |
| * MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any |
| * pending I/Os prior to issuing reset to the controller. |
| * |
| * Return: SUCCESS of successful reset else FAILED |
| */ |
| static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); |
| struct mpi3mr_stgt_priv_data *stgt_priv_data; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data; |
| u8 dev_type = MPI3_DEVICE_DEVFORM_VD; |
| int retval = FAILED, ret; |
| |
| sdev_priv_data = scmd->device->hostdata; |
| if (sdev_priv_data && sdev_priv_data->tgt_priv_data) { |
| stgt_priv_data = sdev_priv_data->tgt_priv_data; |
| dev_type = stgt_priv_data->dev_type; |
| } |
| |
| if (dev_type == MPI3_DEVICE_DEVFORM_VD) { |
| mpi3mr_wait_for_host_io(mrioc, |
| MPI3MR_RAID_ERRREC_RESET_TIMEOUT); |
| if (!mpi3mr_get_fw_pending_ios(mrioc)) { |
| retval = SUCCESS; |
| goto out; |
| } |
| } |
| |
| mpi3mr_print_pending_host_io(mrioc); |
| ret = mpi3mr_soft_reset_handler(mrioc, |
| MPI3MR_RESET_FROM_EH_HOS, 1); |
| if (ret) |
| goto out; |
| |
| retval = SUCCESS; |
| out: |
| sdev_printk(KERN_INFO, scmd->device, |
| "Host reset is %s for scmd(%p)\n", |
| ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_eh_target_reset - Target reset error handling callback |
| * @scmd: SCSI command reference |
| * |
| * Issue Target reset Task Management and verify the scmd is |
| * terminated successfully and return status accordingly. |
| * |
| * Return: SUCCESS of successful termination of the scmd else |
| * FAILED |
| */ |
| static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); |
| struct mpi3mr_stgt_priv_data *stgt_priv_data; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data; |
| u16 dev_handle; |
| u8 resp_code = 0; |
| int retval = FAILED, ret = 0; |
| |
| sdev_printk(KERN_INFO, scmd->device, |
| "Attempting Target Reset! scmd(%p)\n", scmd); |
| scsi_print_command(scmd); |
| |
| sdev_priv_data = scmd->device->hostdata; |
| if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "SCSI device is not available\n"); |
| retval = SUCCESS; |
| goto out; |
| } |
| |
| stgt_priv_data = sdev_priv_data->tgt_priv_data; |
| dev_handle = stgt_priv_data->dev_handle; |
| if (stgt_priv_data->dev_removed) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s:target(handle = 0x%04x) is removed, target reset is not issued\n", |
| mrioc->name, dev_handle); |
| retval = FAILED; |
| goto out; |
| } |
| sdev_printk(KERN_INFO, scmd->device, |
| "Target Reset is issued to handle(0x%04x)\n", |
| dev_handle); |
| |
| ret = mpi3mr_issue_tm(mrioc, |
| MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle, |
| sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS, |
| MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd); |
| |
| if (ret) |
| goto out; |
| |
| if (stgt_priv_data->pend_count) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s: target has %d pending commands, target reset is failed\n", |
| mrioc->name, stgt_priv_data->pend_count); |
| goto out; |
| } |
| |
| retval = SUCCESS; |
| out: |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s: target reset is %s for scmd(%p)\n", mrioc->name, |
| ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_eh_dev_reset- Device reset error handling callback |
| * @scmd: SCSI command reference |
| * |
| * Issue lun reset Task Management and verify the scmd is |
| * terminated successfully and return status accordingly. |
| * |
| * Return: SUCCESS of successful termination of the scmd else |
| * FAILED |
| */ |
| static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); |
| struct mpi3mr_stgt_priv_data *stgt_priv_data; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data; |
| u16 dev_handle; |
| u8 resp_code = 0; |
| int retval = FAILED, ret = 0; |
| |
| sdev_printk(KERN_INFO, scmd->device, |
| "Attempting Device(lun) Reset! scmd(%p)\n", scmd); |
| scsi_print_command(scmd); |
| |
| sdev_priv_data = scmd->device->hostdata; |
| if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "SCSI device is not available\n"); |
| retval = SUCCESS; |
| goto out; |
| } |
| |
| stgt_priv_data = sdev_priv_data->tgt_priv_data; |
| dev_handle = stgt_priv_data->dev_handle; |
| if (stgt_priv_data->dev_removed) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s: device(handle = 0x%04x) is removed, device(LUN) reset is not issued\n", |
| mrioc->name, dev_handle); |
| retval = FAILED; |
| goto out; |
| } |
| sdev_printk(KERN_INFO, scmd->device, |
| "Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle); |
| |
| ret = mpi3mr_issue_tm(mrioc, |
| MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle, |
| sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS, |
| MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd); |
| |
| if (ret) |
| goto out; |
| |
| if (sdev_priv_data->pend_count) { |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s: device has %d pending commands, device(LUN) reset is failed\n", |
| mrioc->name, sdev_priv_data->pend_count); |
| goto out; |
| } |
| retval = SUCCESS; |
| out: |
| sdev_printk(KERN_INFO, scmd->device, |
| "%s: device(LUN) reset is %s for scmd(%p)\n", mrioc->name, |
| ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_scan_start - Scan start callback handler |
| * @shost: SCSI host reference |
| * |
| * Issue port enable request asynchronously. |
| * |
| * Return: Nothing |
| */ |
| static void mpi3mr_scan_start(struct Scsi_Host *shost) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(shost); |
| |
| mrioc->scan_started = 1; |
| ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__); |
| if (mpi3mr_issue_port_enable(mrioc, 1)) { |
| ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__); |
| mrioc->scan_started = 0; |
| mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR; |
| } |
| } |
| |
| /** |
| * mpi3mr_scan_finished - Scan finished callback handler |
| * @shost: SCSI host reference |
| * @time: Jiffies from the scan start |
| * |
| * Checks whether the port enable is completed or timedout or |
| * failed and set the scan status accordingly after taking any |
| * recovery if required. |
| * |
| * Return: 1 on scan finished or timed out, 0 for in progress |
| */ |
| static int mpi3mr_scan_finished(struct Scsi_Host *shost, |
| unsigned long time) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(shost); |
| u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT; |
| u32 ioc_status = readl(&mrioc->sysif_regs->ioc_status); |
| |
| if ((ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) || |
| (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)) { |
| ioc_err(mrioc, "port enable failed due to fault or reset\n"); |
| mpi3mr_print_fault_info(mrioc); |
| mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR; |
| mrioc->scan_started = 0; |
| mrioc->init_cmds.is_waiting = 0; |
| mrioc->init_cmds.callback = NULL; |
| mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; |
| } |
| |
| if (time >= (pe_timeout * HZ)) { |
| ioc_err(mrioc, "port enable failed due to time out\n"); |
| mpi3mr_check_rh_fault_ioc(mrioc, |
| MPI3MR_RESET_FROM_PE_TIMEOUT); |
| mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR; |
| mrioc->scan_started = 0; |
| mrioc->init_cmds.is_waiting = 0; |
| mrioc->init_cmds.callback = NULL; |
| mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; |
| } |
| |
| if (mrioc->scan_started) |
| return 0; |
| |
| if (mrioc->scan_failed) { |
| ioc_err(mrioc, |
| "port enable failed with status=0x%04x\n", |
| mrioc->scan_failed); |
| } else |
| ioc_info(mrioc, "port enable is successfully completed\n"); |
| |
| mpi3mr_start_watchdog(mrioc); |
| mrioc->is_driver_loading = 0; |
| mrioc->stop_bsgs = 0; |
| return 1; |
| } |
| |
| /** |
| * mpi3mr_slave_destroy - Slave destroy callback handler |
| * @sdev: SCSI device reference |
| * |
| * Cleanup and free per device(lun) private data. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_slave_destroy(struct scsi_device *sdev) |
| { |
| struct Scsi_Host *shost; |
| struct mpi3mr_ioc *mrioc; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; |
| struct mpi3mr_tgt_dev *tgt_dev; |
| unsigned long flags; |
| struct scsi_target *starget; |
| |
| if (!sdev->hostdata) |
| return; |
| |
| starget = scsi_target(sdev); |
| shost = dev_to_shost(&starget->dev); |
| mrioc = shost_priv(shost); |
| scsi_tgt_priv_data = starget->hostdata; |
| |
| scsi_tgt_priv_data->num_luns--; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); |
| if (tgt_dev && (!scsi_tgt_priv_data->num_luns)) |
| tgt_dev->starget = NULL; |
| if (tgt_dev) |
| mpi3mr_tgtdev_put(tgt_dev); |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| |
| kfree(sdev->hostdata); |
| sdev->hostdata = NULL; |
| } |
| |
| /** |
| * mpi3mr_target_destroy - Target destroy callback handler |
| * @starget: SCSI target reference |
| * |
| * Cleanup and free per target private data. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_target_destroy(struct scsi_target *starget) |
| { |
| struct Scsi_Host *shost; |
| struct mpi3mr_ioc *mrioc; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; |
| struct mpi3mr_tgt_dev *tgt_dev; |
| unsigned long flags; |
| |
| if (!starget->hostdata) |
| return; |
| |
| shost = dev_to_shost(&starget->dev); |
| mrioc = shost_priv(shost); |
| scsi_tgt_priv_data = starget->hostdata; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data); |
| if (tgt_dev && (tgt_dev->starget == starget) && |
| (tgt_dev->perst_id == starget->id)) |
| tgt_dev->starget = NULL; |
| if (tgt_dev) { |
| scsi_tgt_priv_data->tgt_dev = NULL; |
| scsi_tgt_priv_data->perst_id = 0; |
| mpi3mr_tgtdev_put(tgt_dev); |
| mpi3mr_tgtdev_put(tgt_dev); |
| } |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| |
| kfree(starget->hostdata); |
| starget->hostdata = NULL; |
| } |
| |
| /** |
| * mpi3mr_slave_configure - Slave configure callback handler |
| * @sdev: SCSI device reference |
| * |
| * Configure queue depth, max hardware sectors and virt boundary |
| * as required |
| * |
| * Return: 0 always. |
| */ |
| static int mpi3mr_slave_configure(struct scsi_device *sdev) |
| { |
| struct scsi_target *starget; |
| struct Scsi_Host *shost; |
| struct mpi3mr_ioc *mrioc; |
| struct mpi3mr_tgt_dev *tgt_dev; |
| unsigned long flags; |
| int retval = 0; |
| |
| starget = scsi_target(sdev); |
| shost = dev_to_shost(&starget->dev); |
| mrioc = shost_priv(shost); |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| if (!tgt_dev) |
| return -ENXIO; |
| |
| mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth); |
| |
| sdev->eh_timeout = MPI3MR_EH_SCMD_TIMEOUT; |
| blk_queue_rq_timeout(sdev->request_queue, MPI3MR_SCMD_TIMEOUT); |
| |
| switch (tgt_dev->dev_type) { |
| case MPI3_DEVICE_DEVFORM_PCIE: |
| /*The block layer hw sector size = 512*/ |
| if ((tgt_dev->dev_spec.pcie_inf.dev_info & |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == |
| MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { |
| blk_queue_max_hw_sectors(sdev->request_queue, |
| tgt_dev->dev_spec.pcie_inf.mdts / 512); |
| if (tgt_dev->dev_spec.pcie_inf.pgsz == 0) |
| blk_queue_virt_boundary(sdev->request_queue, |
| ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); |
| else |
| blk_queue_virt_boundary(sdev->request_queue, |
| ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1)); |
| } |
| break; |
| default: |
| break; |
| } |
| |
| mpi3mr_tgtdev_put(tgt_dev); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_slave_alloc -Slave alloc callback handler |
| * @sdev: SCSI device reference |
| * |
| * Allocate per device(lun) private data and initialize it. |
| * |
| * Return: 0 on success -ENOMEM on memory allocation failure. |
| */ |
| static int mpi3mr_slave_alloc(struct scsi_device *sdev) |
| { |
| struct Scsi_Host *shost; |
| struct mpi3mr_ioc *mrioc; |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; |
| struct mpi3mr_tgt_dev *tgt_dev; |
| struct mpi3mr_sdev_priv_data *scsi_dev_priv_data; |
| unsigned long flags; |
| struct scsi_target *starget; |
| int retval = 0; |
| |
| starget = scsi_target(sdev); |
| shost = dev_to_shost(&starget->dev); |
| mrioc = shost_priv(shost); |
| scsi_tgt_priv_data = starget->hostdata; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); |
| |
| if (tgt_dev) { |
| if (tgt_dev->starget == NULL) |
| tgt_dev->starget = starget; |
| mpi3mr_tgtdev_put(tgt_dev); |
| retval = 0; |
| } else { |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| return -ENXIO; |
| } |
| |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| |
| scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL); |
| if (!scsi_dev_priv_data) |
| return -ENOMEM; |
| |
| scsi_dev_priv_data->lun_id = sdev->lun; |
| scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data; |
| sdev->hostdata = scsi_dev_priv_data; |
| |
| scsi_tgt_priv_data->num_luns++; |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_target_alloc - Target alloc callback handler |
| * @starget: SCSI target reference |
| * |
| * Allocate per target private data and initialize it. |
| * |
| * Return: 0 on success -ENOMEM on memory allocation failure. |
| */ |
| static int mpi3mr_target_alloc(struct scsi_target *starget) |
| { |
| struct Scsi_Host *shost = dev_to_shost(&starget->dev); |
| struct mpi3mr_ioc *mrioc = shost_priv(shost); |
| struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; |
| struct mpi3mr_tgt_dev *tgt_dev; |
| unsigned long flags; |
| int retval = 0; |
| |
| scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL); |
| if (!scsi_tgt_priv_data) |
| return -ENOMEM; |
| |
| starget->hostdata = scsi_tgt_priv_data; |
| |
| spin_lock_irqsave(&mrioc->tgtdev_lock, flags); |
| tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); |
| if (tgt_dev && !tgt_dev->is_hidden) { |
| scsi_tgt_priv_data->starget = starget; |
| scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; |
| scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; |
| scsi_tgt_priv_data->dev_type = tgt_dev->dev_type; |
| scsi_tgt_priv_data->tgt_dev = tgt_dev; |
| tgt_dev->starget = starget; |
| atomic_set(&scsi_tgt_priv_data->block_io, 0); |
| retval = 0; |
| scsi_tgt_priv_data->io_throttle_enabled = |
| tgt_dev->io_throttle_enabled; |
| if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD) |
| scsi_tgt_priv_data->throttle_group = |
| tgt_dev->dev_spec.vd_inf.tg; |
| } else |
| retval = -ENXIO; |
| spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_check_return_unmap - Whether an unmap is allowed |
| * @mrioc: Adapter instance reference |
| * @scmd: SCSI Command reference |
| * |
| * The controller hardware cannot handle certain unmap commands |
| * for NVMe drives, this routine checks those and return true |
| * and completes the SCSI command with proper status and sense |
| * data. |
| * |
| * Return: TRUE for not allowed unmap, FALSE otherwise. |
| */ |
| static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc, |
| struct scsi_cmnd *scmd) |
| { |
| unsigned char *buf; |
| u16 param_len, desc_len, trunc_param_len; |
| |
| trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7); |
| |
| if (mrioc->pdev->revision) { |
| if ((param_len > 24) && ((param_len - 8) & 0xF)) { |
| trunc_param_len -= (param_len - 8) & 0xF; |
| dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR); |
| dprint_scsi_err(mrioc, |
| "truncating param_len from (%d) to (%d)\n", |
| param_len, trunc_param_len); |
| put_unaligned_be16(trunc_param_len, scmd->cmnd + 7); |
| dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR); |
| } |
| return false; |
| } |
| |
| if (!param_len) { |
| ioc_warn(mrioc, |
| "%s: cdb received with zero parameter length\n", |
| __func__); |
| scsi_print_command(scmd); |
| scmd->result = DID_OK << 16; |
| scsi_done(scmd); |
| return true; |
| } |
| |
| if (param_len < 24) { |
| ioc_warn(mrioc, |
| "%s: cdb received with invalid param_len: %d\n", |
| __func__, param_len); |
| scsi_print_command(scmd); |
| scmd->result = SAM_STAT_CHECK_CONDITION; |
| scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, |
| 0x1A, 0); |
| scsi_done(scmd); |
| return true; |
| } |
| if (param_len != scsi_bufflen(scmd)) { |
| ioc_warn(mrioc, |
| "%s: cdb received with param_len: %d bufflen: %d\n", |
| __func__, param_len, scsi_bufflen(scmd)); |
| scsi_print_command(scmd); |
| scmd->result = SAM_STAT_CHECK_CONDITION; |
| scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, |
| 0x1A, 0); |
| scsi_done(scmd); |
| return true; |
| } |
| buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC); |
| if (!buf) { |
| scsi_print_command(scmd); |
| scmd->result = SAM_STAT_CHECK_CONDITION; |
| scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, |
| 0x55, 0x03); |
| scsi_done(scmd); |
| return true; |
| } |
| scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); |
| desc_len = get_unaligned_be16(&buf[2]); |
| |
| if (desc_len < 16) { |
| ioc_warn(mrioc, |
| "%s: Invalid descriptor length in param list: %d\n", |
| __func__, desc_len); |
| scsi_print_command(scmd); |
| scmd->result = SAM_STAT_CHECK_CONDITION; |
| scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, |
| 0x26, 0); |
| scsi_done(scmd); |
| kfree(buf); |
| return true; |
| } |
| |
| if (param_len > (desc_len + 8)) { |
| trunc_param_len = desc_len + 8; |
| scsi_print_command(scmd); |
| dprint_scsi_err(mrioc, |
| "truncating param_len(%d) to desc_len+8(%d)\n", |
| param_len, trunc_param_len); |
| put_unaligned_be16(trunc_param_len, scmd->cmnd + 7); |
| scsi_print_command(scmd); |
| } |
| |
| kfree(buf); |
| return false; |
| } |
| |
| /** |
| * mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown |
| * @scmd: SCSI Command reference |
| * |
| * Checks whether a cdb is allowed during shutdown or not. |
| * |
| * Return: TRUE for allowed commands, FALSE otherwise. |
| */ |
| |
| inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd) |
| { |
| switch (scmd->cmnd[0]) { |
| case SYNCHRONIZE_CACHE: |
| case START_STOP: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| /** |
| * mpi3mr_qcmd - I/O request despatcher |
| * @shost: SCSI Host reference |
| * @scmd: SCSI Command reference |
| * |
| * Issues the SCSI Command as an MPI3 request. |
| * |
| * Return: 0 on successful queueing of the request or if the |
| * request is completed with failure. |
| * SCSI_MLQUEUE_DEVICE_BUSY when the device is busy. |
| * SCSI_MLQUEUE_HOST_BUSY when the host queue is full. |
| */ |
| static int mpi3mr_qcmd(struct Scsi_Host *shost, |
| struct scsi_cmnd *scmd) |
| { |
| struct mpi3mr_ioc *mrioc = shost_priv(shost); |
| struct mpi3mr_stgt_priv_data *stgt_priv_data; |
| struct mpi3mr_sdev_priv_data *sdev_priv_data; |
| struct scmd_priv *scmd_priv_data = NULL; |
| struct mpi3_scsi_io_request *scsiio_req = NULL; |
| struct op_req_qinfo *op_req_q = NULL; |
| int retval = 0; |
| u16 dev_handle; |
| u16 host_tag; |
| u32 scsiio_flags = 0, data_len_blks = 0; |
| struct request *rq = scsi_cmd_to_rq(scmd); |
| int iprio_class; |
| u8 is_pcie_dev = 0; |
| u32 tracked_io_sz = 0; |
| u32 ioc_pend_data_len = 0, tg_pend_data_len = 0; |
| struct mpi3mr_throttle_group_info *tg = NULL; |
| |
| if (mrioc->unrecoverable) { |
| scmd->result = DID_ERROR << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| |
| sdev_priv_data = scmd->device->hostdata; |
| if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| |
| if (mrioc->stop_drv_processing && |
| !(mpi3mr_allow_scmd_to_fw(scmd))) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| |
| if (mrioc->reset_in_progress) { |
| retval = SCSI_MLQUEUE_HOST_BUSY; |
| goto out; |
| } |
| |
| stgt_priv_data = sdev_priv_data->tgt_priv_data; |
| |
| dev_handle = stgt_priv_data->dev_handle; |
| if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| if (stgt_priv_data->dev_removed) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| |
| if (atomic_read(&stgt_priv_data->block_io)) { |
| if (mrioc->stop_drv_processing) { |
| scmd->result = DID_NO_CONNECT << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| retval = SCSI_MLQUEUE_DEVICE_BUSY; |
| goto out; |
| } |
| |
| if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) |
| is_pcie_dev = 1; |
| if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev && |
| (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) && |
| mpi3mr_check_return_unmap(mrioc, scmd)) |
| goto out; |
| |
| host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd); |
| if (host_tag == MPI3MR_HOSTTAG_INVALID) { |
| scmd->result = DID_ERROR << 16; |
| scsi_done(scmd); |
| goto out; |
| } |
| |
| if (scmd->sc_data_direction == DMA_FROM_DEVICE) |
| scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ; |
| else if (scmd->sc_data_direction == DMA_TO_DEVICE) |
| scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE; |
| else |
| scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER; |
| |
| scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ; |
| |
| if (sdev_priv_data->ncq_prio_enable) { |
| iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); |
| if (iprio_class == IOPRIO_CLASS_RT) |
| scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT; |
| } |
| |
| if (scmd->cmd_len > 16) |
| scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16; |
| |
| scmd_priv_data = scsi_cmd_priv(scmd); |
| memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ); |
| scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req; |
| scsiio_req->function = MPI3_FUNCTION_SCSI_IO; |
| scsiio_req->host_tag = cpu_to_le16(host_tag); |
| |
| mpi3mr_setup_eedp(mrioc, scmd, scsiio_req); |
| |
| memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len); |
| scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd)); |
| scsiio_req->dev_handle = cpu_to_le16(dev_handle); |
| scsiio_req->flags = cpu_to_le32(scsiio_flags); |
| int_to_scsilun(sdev_priv_data->lun_id, |
| (struct scsi_lun *)scsiio_req->lun); |
| |
| if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) { |
| mpi3mr_clear_scmd_priv(mrioc, scmd); |
| retval = SCSI_MLQUEUE_HOST_BUSY; |
| goto out; |
| } |
| op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx]; |
| data_len_blks = scsi_bufflen(scmd) >> 9; |
| if ((data_len_blks >= mrioc->io_throttle_data_length) && |
| stgt_priv_data->io_throttle_enabled) { |
| tracked_io_sz = data_len_blks; |
| tg = stgt_priv_data->throttle_group; |
| if (tg) { |
| ioc_pend_data_len = atomic_add_return(data_len_blks, |
| &mrioc->pend_large_data_sz); |
| tg_pend_data_len = atomic_add_return(data_len_blks, |
| &tg->pend_large_data_sz); |
| if (!tg->io_divert && ((ioc_pend_data_len >= |
| mrioc->io_throttle_high) || |
| (tg_pend_data_len >= tg->high))) { |
| tg->io_divert = 1; |
| tg->need_qd_reduction = 1; |
| mpi3mr_set_io_divert_for_all_vd_in_tg(mrioc, |
| tg, 1); |
| mpi3mr_queue_qd_reduction_event(mrioc, tg); |
| } |
| } else { |
| ioc_pend_data_len = atomic_add_return(data_len_blks, |
| &mrioc->pend_large_data_sz); |
| if (ioc_pend_data_len >= mrioc->io_throttle_high) |
| stgt_priv_data->io_divert = 1; |
| } |
| } |
| |
| if (stgt_priv_data->io_divert) { |
| scsiio_req->msg_flags |= |
| MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE; |
| scsiio_flags |= MPI3_SCSIIO_FLAGS_DIVERT_REASON_IO_THROTTLING; |
| } |
| scsiio_req->flags = cpu_to_le32(scsiio_flags); |
| |
| if (mpi3mr_op_request_post(mrioc, op_req_q, |
| scmd_priv_data->mpi3mr_scsiio_req)) { |
| mpi3mr_clear_scmd_priv(mrioc, scmd); |
| retval = SCSI_MLQUEUE_HOST_BUSY; |
| if (tracked_io_sz) { |
| atomic_sub(tracked_io_sz, &mrioc->pend_large_data_sz); |
| if (tg) |
| atomic_sub(tracked_io_sz, |
| &tg->pend_large_data_sz); |
| } |
| goto out; |
| } |
| |
| out: |
| return retval; |
| } |
| |
| static struct scsi_host_template mpi3mr_driver_template = { |
| .module = THIS_MODULE, |
| .name = "MPI3 Storage Controller", |
| .proc_name = MPI3MR_DRIVER_NAME, |
| .queuecommand = mpi3mr_qcmd, |
| .target_alloc = mpi3mr_target_alloc, |
| .slave_alloc = mpi3mr_slave_alloc, |
| .slave_configure = mpi3mr_slave_configure, |
| .target_destroy = mpi3mr_target_destroy, |
| .slave_destroy = mpi3mr_slave_destroy, |
| .scan_finished = mpi3mr_scan_finished, |
| .scan_start = mpi3mr_scan_start, |
| .change_queue_depth = mpi3mr_change_queue_depth, |
| .eh_device_reset_handler = mpi3mr_eh_dev_reset, |
| .eh_target_reset_handler = mpi3mr_eh_target_reset, |
| .eh_host_reset_handler = mpi3mr_eh_host_reset, |
| .bios_param = mpi3mr_bios_param, |
| .map_queues = mpi3mr_map_queues, |
| .mq_poll = mpi3mr_blk_mq_poll, |
| .no_write_same = 1, |
| .can_queue = 1, |
| .this_id = -1, |
| .sg_tablesize = MPI3MR_SG_DEPTH, |
| /* max xfer supported is 1M (2K in 512 byte sized sectors) |
| */ |
| .max_sectors = 2048, |
| .cmd_per_lun = MPI3MR_MAX_CMDS_LUN, |
| .max_segment_size = 0xffffffff, |
| .track_queue_depth = 1, |
| .cmd_size = sizeof(struct scmd_priv), |
| .shost_groups = mpi3mr_host_groups, |
| .sdev_groups = mpi3mr_dev_groups, |
| }; |
| |
| /** |
| * mpi3mr_init_drv_cmd - Initialize internal command tracker |
| * @cmdptr: Internal command tracker |
| * @host_tag: Host tag used for the specific command |
| * |
| * Initialize the internal command tracker structure with |
| * specified host tag. |
| * |
| * Return: Nothing. |
| */ |
| static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr, |
| u16 host_tag) |
| { |
| mutex_init(&cmdptr->mutex); |
| cmdptr->reply = NULL; |
| cmdptr->state = MPI3MR_CMD_NOTUSED; |
| cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE; |
| cmdptr->host_tag = host_tag; |
| } |
| |
| /** |
| * osintfc_mrioc_security_status -Check controller secure status |
| * @pdev: PCI device instance |
| * |
| * Read the Device Serial Number capability from PCI config |
| * space and decide whether the controller is secure or not. |
| * |
| * Return: 0 on success, non-zero on failure. |
| */ |
| static int |
| osintfc_mrioc_security_status(struct pci_dev *pdev) |
| { |
| u32 cap_data; |
| int base; |
| u32 ctlr_status; |
| u32 debug_status; |
| int retval = 0; |
| |
| base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN); |
| if (!base) { |
| dev_err(&pdev->dev, |
| "%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__); |
| return -1; |
| } |
| |
| pci_read_config_dword(pdev, base + 4, &cap_data); |
| |
| debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK; |
| ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK; |
| |
| switch (ctlr_status) { |
| case MPI3MR_INVALID_DEVICE: |
| dev_err(&pdev->dev, |
| "%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", |
| __func__, pdev->device, pdev->subsystem_vendor, |
| pdev->subsystem_device); |
| retval = -1; |
| break; |
| case MPI3MR_CONFIG_SECURE_DEVICE: |
| if (!debug_status) |
| dev_info(&pdev->dev, |
| "%s: Config secure ctlr is detected\n", |
| __func__); |
| break; |
| case MPI3MR_HARD_SECURE_DEVICE: |
| break; |
| case MPI3MR_TAMPERED_DEVICE: |
| dev_err(&pdev->dev, |
| "%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", |
| __func__, pdev->device, pdev->subsystem_vendor, |
| pdev->subsystem_device); |
| retval = -1; |
| break; |
| default: |
| retval = -1; |
| break; |
| } |
| |
| if (!retval && debug_status) { |
| dev_err(&pdev->dev, |
| "%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", |
| __func__, pdev->device, pdev->subsystem_vendor, |
| pdev->subsystem_device); |
| retval = -1; |
| } |
| |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_probe - PCI probe callback |
| * @pdev: PCI device instance |
| * @id: PCI device ID details |
| * |
| * controller initialization routine. Checks the security status |
| * of the controller and if it is invalid or tampered return the |
| * probe without initializing the controller. Otherwise, |
| * allocate per adapter instance through shost_priv and |
| * initialize controller specific data structures, initializae |
| * the controller hardware, add shost to the SCSI subsystem. |
| * |
| * Return: 0 on success, non-zero on failure. |
| */ |
| |
| static int |
| mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| { |
| struct mpi3mr_ioc *mrioc = NULL; |
| struct Scsi_Host *shost = NULL; |
| int retval = 0, i; |
| |
| if (osintfc_mrioc_security_status(pdev)) { |
| warn_non_secure_ctlr = 1; |
| return 1; /* For Invalid and Tampered device */ |
| } |
| |
| shost = scsi_host_alloc(&mpi3mr_driver_template, |
| sizeof(struct mpi3mr_ioc)); |
| if (!shost) { |
| retval = -ENODEV; |
| goto shost_failed; |
| } |
| |
| mrioc = shost_priv(shost); |
| mrioc->id = mrioc_ids++; |
| sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME); |
| sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id); |
| INIT_LIST_HEAD(&mrioc->list); |
| spin_lock(&mrioc_list_lock); |
| list_add_tail(&mrioc->list, &mrioc_list); |
| spin_unlock(&mrioc_list_lock); |
| |
| spin_lock_init(&mrioc->admin_req_lock); |
| spin_lock_init(&mrioc->reply_free_queue_lock); |
| spin_lock_init(&mrioc->sbq_lock); |
| spin_lock_init(&mrioc->fwevt_lock); |
| spin_lock_init(&mrioc->tgtdev_lock); |
| spin_lock_init(&mrioc->watchdog_lock); |
| spin_lock_init(&mrioc->chain_buf_lock); |
| |
| INIT_LIST_HEAD(&mrioc->fwevt_list); |
| INIT_LIST_HEAD(&mrioc->tgtdev_list); |
| INIT_LIST_HEAD(&mrioc->delayed_rmhs_list); |
| INIT_LIST_HEAD(&mrioc->delayed_evtack_cmds_list); |
| |
| mutex_init(&mrioc->reset_mutex); |
| mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS); |
| mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS); |
| mpi3mr_init_drv_cmd(&mrioc->bsg_cmds, MPI3MR_HOSTTAG_BSG_CMDS); |
| |
| for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) |
| mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i], |
| MPI3MR_HOSTTAG_DEVRMCMD_MIN + i); |
| |
| if (pdev->revision) |
| mrioc->enable_segqueue = true; |
| |
| init_waitqueue_head(&mrioc->reset_waitq); |
| mrioc->logging_level = logging_level; |
| mrioc->shost = shost; |
| mrioc->pdev = pdev; |
| mrioc->stop_bsgs = 1; |
| |
| /* init shost parameters */ |
| shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH; |
| shost->max_lun = -1; |
| shost->unique_id = mrioc->id; |
| |
| shost->max_channel = 0; |
| shost->max_id = 0xFFFFFFFF; |
| |
| shost->host_tagset = 1; |
| |
| if (prot_mask >= 0) |
| scsi_host_set_prot(shost, prot_mask); |
| else { |
| prot_mask = SHOST_DIF_TYPE1_PROTECTION |
| | SHOST_DIF_TYPE2_PROTECTION |
| | SHOST_DIF_TYPE3_PROTECTION; |
| scsi_host_set_prot(shost, prot_mask); |
| } |
| |
| ioc_info(mrioc, |
| "%s :host protection capabilities enabled %s%s%s%s%s%s%s\n", |
| __func__, |
| (prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", |
| (prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", |
| (prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", |
| (prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", |
| (prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", |
| (prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", |
| (prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); |
| |
| if (prot_guard_mask) |
| scsi_host_set_guard(shost, (prot_guard_mask & 3)); |
| else |
| scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); |
| |
| snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name), |
| "%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id); |
| mrioc->fwevt_worker_thread = alloc_ordered_workqueue( |
| mrioc->fwevt_worker_name, 0); |
| if (!mrioc->fwevt_worker_thread) { |
| ioc_err(mrioc, "failure at %s:%d/%s()!\n", |
| __FILE__, __LINE__, __func__); |
| retval = -ENODEV; |
| goto fwevtthread_failed; |
| } |
| |
| mrioc->is_driver_loading = 1; |
| mrioc->cpu_count = num_online_cpus(); |
| if (mpi3mr_setup_resources(mrioc)) { |
| ioc_err(mrioc, "setup resources failed\n"); |
| retval = -ENODEV; |
| goto resource_alloc_failed; |
| } |
| if (mpi3mr_init_ioc(mrioc)) { |
| ioc_err(mrioc, "initializing IOC failed\n"); |
| retval = -ENODEV; |
| goto init_ioc_failed; |
| } |
| |
| shost->nr_hw_queues = mrioc->num_op_reply_q; |
| if (mrioc->active_poll_qcount) |
| shost->nr_maps = 3; |
| |
| shost->can_queue = mrioc->max_host_ios; |
| shost->sg_tablesize = MPI3MR_SG_DEPTH; |
| shost->max_id = mrioc->facts.max_perids + 1; |
| |
| retval = scsi_add_host(shost, &pdev->dev); |
| if (retval) { |
| ioc_err(mrioc, "failure at %s:%d/%s()!\n", |
| __FILE__, __LINE__, __func__); |
| goto addhost_failed; |
| } |
| |
| scsi_scan_host(shost); |
| mpi3mr_bsg_init(mrioc); |
| return retval; |
| |
| addhost_failed: |
| mpi3mr_stop_watchdog(mrioc); |
| mpi3mr_cleanup_ioc(mrioc); |
| init_ioc_failed: |
| mpi3mr_free_mem(mrioc); |
| mpi3mr_cleanup_resources(mrioc); |
| resource_alloc_failed: |
| destroy_workqueue(mrioc->fwevt_worker_thread); |
| fwevtthread_failed: |
| spin_lock(&mrioc_list_lock); |
| list_del(&mrioc->list); |
| spin_unlock(&mrioc_list_lock); |
| scsi_host_put(shost); |
| shost_failed: |
| return retval; |
| } |
| |
| /** |
| * mpi3mr_remove - PCI remove callback |
| * @pdev: PCI device instance |
| * |
| * Cleanup the IOC by issuing MUR and shutdown notification. |
| * Free up all memory and resources associated with the |
| * controllerand target devices, unregister the shost. |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_remove(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *shost = pci_get_drvdata(pdev); |
| struct mpi3mr_ioc *mrioc; |
| struct workqueue_struct *wq; |
| unsigned long flags; |
| struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; |
| |
| if (!shost) |
| return; |
| |
| mrioc = shost_priv(shost); |
| while (mrioc->reset_in_progress || mrioc->is_driver_loading) |
| ssleep(1); |
| |
| mpi3mr_bsg_exit(mrioc); |
| mrioc->stop_drv_processing = 1; |
| mpi3mr_cleanup_fwevt_list(mrioc); |
| spin_lock_irqsave(&mrioc->fwevt_lock, flags); |
| wq = mrioc->fwevt_worker_thread; |
| mrioc->fwevt_worker_thread = NULL; |
| spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); |
| if (wq) |
| destroy_workqueue(wq); |
| scsi_remove_host(shost); |
| |
| list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, |
| list) { |
| mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); |
| mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); |
| mpi3mr_tgtdev_put(tgtdev); |
| } |
| mpi3mr_stop_watchdog(mrioc); |
| mpi3mr_cleanup_ioc(mrioc); |
| mpi3mr_free_mem(mrioc); |
| mpi3mr_cleanup_resources(mrioc); |
| |
| spin_lock(&mrioc_list_lock); |
| list_del(&mrioc->list); |
| spin_unlock(&mrioc_list_lock); |
| |
| scsi_host_put(shost); |
| } |
| |
| /** |
| * mpi3mr_shutdown - PCI shutdown callback |
| * @pdev: PCI device instance |
| * |
| * Free up all memory and resources associated with the |
| * controller |
| * |
| * Return: Nothing. |
| */ |
| static void mpi3mr_shutdown(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *shost = pci_get_drvdata(pdev); |
| struct mpi3mr_ioc *mrioc; |
| struct workqueue_struct *wq; |
| unsigned long flags; |
| |
| if (!shost) |
| return; |
| |
| mrioc = shost_priv(shost); |
| while (mrioc->reset_in_progress || mrioc->is_driver_loading) |
| ssleep(1); |
| |
| mrioc->stop_drv_processing = 1; |
| mpi3mr_cleanup_fwevt_list(mrioc); |
| spin_lock_irqsave(&mrioc->fwevt_lock, flags); |
| wq = mrioc->fwevt_worker_thread; |
| mrioc->fwevt_worker_thread = NULL; |
| spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); |
| if (wq) |
| destroy_workqueue(wq); |
| |
| mpi3mr_stop_watchdog(mrioc); |
| mpi3mr_cleanup_ioc(mrioc); |
| mpi3mr_cleanup_resources(mrioc); |
| } |
| |
| #ifdef CONFIG_PM |
| /** |
| * mpi3mr_suspend - PCI power management suspend callback |
| * @pdev: PCI device instance |
| * @state: New power state |
| * |
| * Change the power state to the given value and cleanup the IOC |
| * by issuing MUR and shutdown notification |
| * |
| * Return: 0 always. |
| */ |
| static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state) |
| { |
| struct Scsi_Host *shost = pci_get_drvdata(pdev); |
| struct mpi3mr_ioc *mrioc; |
| pci_power_t device_state; |
| |
| if (!shost) |
| return 0; |
| |
| mrioc = shost_priv(shost); |
| while (mrioc->reset_in_progress || mrioc->is_driver_loading) |
| ssleep(1); |
| mrioc->stop_drv_processing = 1; |
| mpi3mr_cleanup_fwevt_list(mrioc); |
| scsi_block_requests(shost); |
| mpi3mr_stop_watchdog(mrioc); |
| mpi3mr_cleanup_ioc(mrioc); |
| |
| device_state = pci_choose_state(pdev, state); |
| ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n", |
| pdev, pci_name(pdev), device_state); |
| pci_save_state(pdev); |
| mpi3mr_cleanup_resources(mrioc); |
| pci_set_power_state(pdev, device_state); |
| |
| return 0; |
| } |
| |
| /** |
| * mpi3mr_resume - PCI power management resume callback |
| * @pdev: PCI device instance |
| * |
| * Restore the power state to D0 and reinitialize the controller |
| * and resume I/O operations to the target devices |
| * |
| * Return: 0 on success, non-zero on failure |
| */ |
| static int mpi3mr_resume(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *shost = pci_get_drvdata(pdev); |
| struct mpi3mr_ioc *mrioc; |
| pci_power_t device_state = pdev->current_state; |
| int r; |
| |
| if (!shost) |
| return 0; |
| |
| mrioc = shost_priv(shost); |
| |
| ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n", |
| pdev, pci_name(pdev), device_state); |
| pci_set_power_state(pdev, PCI_D0); |
| pci_enable_wake(pdev, PCI_D0, 0); |
| pci_restore_state(pdev); |
| mrioc->pdev = pdev; |
| mrioc->cpu_count = num_online_cpus(); |
| r = mpi3mr_setup_resources(mrioc); |
| if (r) { |
| ioc_info(mrioc, "%s: Setup resources failed[%d]\n", |
| __func__, r); |
| return r; |
| } |
| |
| mrioc->stop_drv_processing = 0; |
| mpi3mr_memset_buffers(mrioc); |
| r = mpi3mr_reinit_ioc(mrioc, 1); |
| if (r) { |
| ioc_err(mrioc, "resuming controller failed[%d]\n", r); |
| return r; |
| } |
| scsi_unblock_requests(shost); |
| mpi3mr_start_watchdog(mrioc); |
| |
| return 0; |
| } |
| #endif |
| |
| static const struct pci_device_id mpi3mr_pci_id_table[] = { |
| { |
| PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM, |
| MPI3_MFGPAGE_DEVID_SAS4116, PCI_ANY_ID, PCI_ANY_ID) |
| }, |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table); |
| |
| static struct pci_driver mpi3mr_pci_driver = { |
| .name = MPI3MR_DRIVER_NAME, |
| .id_table = mpi3mr_pci_id_table, |
| .probe = mpi3mr_probe, |
| .remove = mpi3mr_remove, |
| .shutdown = mpi3mr_shutdown, |
| #ifdef CONFIG_PM |
| .suspend = mpi3mr_suspend, |
| .resume = mpi3mr_resume, |
| #endif |
| }; |
| |
| static ssize_t event_counter_show(struct device_driver *dd, char *buf) |
| { |
| return sprintf(buf, "%llu\n", atomic64_read(&event_counter)); |
| } |
| static DRIVER_ATTR_RO(event_counter); |
| |
| static int __init mpi3mr_init(void) |
| { |
| int ret_val; |
| |
| pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME, |
| MPI3MR_DRIVER_VERSION); |
| |
| ret_val = pci_register_driver(&mpi3mr_pci_driver); |
| if (ret_val) { |
| pr_err("%s failed to load due to pci register driver failure\n", |
| MPI3MR_DRIVER_NAME); |
| return ret_val; |
| } |
| |
| ret_val = driver_create_file(&mpi3mr_pci_driver.driver, |
| &driver_attr_event_counter); |
| if (ret_val) |
| pci_unregister_driver(&mpi3mr_pci_driver); |
| |
| return ret_val; |
| } |
| |
| static void __exit mpi3mr_exit(void) |
| { |
| if (warn_non_secure_ctlr) |
| pr_warn( |
| "Unloading %s version %s while managing a non secure controller\n", |
| MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION); |
| else |
| pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME, |
| MPI3MR_DRIVER_VERSION); |
| |
| driver_remove_file(&mpi3mr_pci_driver.driver, |
| &driver_attr_event_counter); |
| pci_unregister_driver(&mpi3mr_pci_driver); |
| } |
| |
| module_init(mpi3mr_init); |
| module_exit(mpi3mr_exit); |