| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kashyap Desai | 14608 | 67.96% | 19 | 19.00% |
| Sreekanth Reddy | 5303 | 24.67% | 46 | 46.00% |
| Ranjan Kumar | 857 | 3.99% | 10 | 10.00% |
| Sumit Saxena | 181 | 0.84% | 6 | 6.00% |
| Christoph Hellwig | 130 | 0.60% | 2 | 2.00% |
| Tomas Henzl | 115 | 0.53% | 3 | 3.00% |
| Hannes Reinecke | 86 | 0.40% | 1 | 1.00% |
| Chandrakanth Patil | 66 | 0.31% | 3 | 3.00% |
| Guixin Liu | 63 | 0.29% | 1 | 1.00% |
| Martin K. Petersen | 36 | 0.17% | 1 | 1.00% |
| Shin'ichiro Kawasaki | 34 | 0.16% | 2 | 2.00% |
| Bart Van Assche | 10 | 0.05% | 3 | 3.00% |
| John Garry | 4 | 0.02% | 1 | 1.00% |
| Yang Yingliang | 2 | 0.01% | 1 | 1.00% |
| Gustavo A. R. Silva | 1 | 0.00% | 1 | 1.00% |
| Total | 21496 | 100 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for Broadcom MPI3 Storage Controllers * * Copyright (C) 2017-2023 Broadcom Inc. * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com) * */ #include "mpi3mr.h" #include <linux/idr.h> /* global driver scop variables */ LIST_HEAD(mrioc_list); DEFINE_SPINLOCK(mrioc_list_lock); static DEFINE_IDA(mrioc_ida); 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)"); static int max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES; module_param(max_sgl_entries, int, 0444); MODULE_PARM_DESC(max_sgl_entries, "Preferred max number of SG entries to be used for a single I/O\n" "The actual value will be determined by the driver\n" "(Minimum=256, Maximum=2048, default=256)"); /* 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) #define MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH (0xFFFE) /** * 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; tgt_priv->wslen = 0; if (tgtdev->host_exposed) atomic_set(&tgt_priv->block_io, 1); } } } /** * 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_flush_cmds_for_unrecovered_controller - Flush all pending cmds * @mrioc: Adapter instance reference * * This function waits for currently running IO poll threads to * exit and then flushes all host I/Os and any internal pending * cmds. This is executed after controller is marked as * unrecoverable. * * Return: Nothing. */ void mpi3mr_flush_cmds_for_unrecovered_controller(struct mpi3mr_ioc *mrioc) { struct Scsi_Host *shost = mrioc->shost; int i; if (!mrioc->unrecoverable) return; if (mrioc->op_reply_qinfo) { for (i = 0; i < mrioc->num_queues; i++) { while (atomic_read(&mrioc->op_reply_qinfo[i].in_use)) udelay(500); atomic_set(&mrioc->op_reply_qinfo[i].pend_ios, 0); } } mrioc->flush_io_count = 0; blk_mq_tagset_busy_iter(&shost->tag_set, mpi3mr_flush_scmd, (void *)mrioc); mpi3mr_flush_delayed_cmd_lists(mrioc); mpi3mr_flush_drv_cmds(mrioc); } /** * 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); tgtdev->state = MPI3MR_DEV_CREATED; spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); } /** * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list * @mrioc: Adapter instance reference * @tgtdev: Target device * @must_delete: Must delete the target device from the list irrespective * of the device state. * * 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, bool must_delete) { unsigned long flags; spin_lock_irqsave(&mrioc->tgtdev_lock, flags); if ((tgtdev->state == MPI3MR_DEV_REMOVE_HS_STARTED) || (must_delete == true)) { if (!list_empty(&tgtdev->list)) { list_del_init(&tgtdev->list); tgtdev->state = MPI3MR_DEV_DELETED; 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. */ 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. */ 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; atomic_set(&tgt_priv->block_io, 0); tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; } if (!mrioc->sas_transport_enabled || (tgtdev->dev_type != MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl) { 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; } } } } else mpi3mr_remove_tgtdev_from_sas_transport(mrioc, tgtdev); 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; if (mrioc->reset_in_progress) return -1; tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); if (!tgtdev) { retval = -1; goto out; } if (tgtdev->is_hidden || tgtdev->host_exposed) { retval = -1; goto out; } if (!mrioc->sas_transport_enabled || (tgtdev->dev_type != MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl){ tgtdev->host_exposed = 1; if (mrioc->current_event) mrioc->current_event->pending_at_sml = 1; scsi_scan_target(&mrioc->shost->shost_gendev, mrioc->scsi_device_channel, 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; } } } else mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev); 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; } static void mpi3mr_configure_nvme_dev(struct mpi3mr_tgt_dev *tgt_dev, struct queue_limits *lim) { u8 pgsz = tgt_dev->dev_spec.pcie_inf.pgsz ? : MPI3MR_DEFAULT_PGSZEXP; lim->max_hw_sectors = tgt_dev->dev_spec.pcie_inf.mdts / 512; lim->virt_boundary_mask = (1 << pgsz) - 1; } static void mpi3mr_configure_tgt_dev(struct mpi3mr_tgt_dev *tgt_dev, struct queue_limits *lim) { if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_PCIE && (tgt_dev->dev_spec.pcie_inf.dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) mpi3mr_configure_nvme_dev(tgt_dev, lim); } /** * 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; struct queue_limits lim; tgtdev = (struct mpi3mr_tgt_dev *)data; if (!tgtdev) return; mpi3mr_change_queue_depth(sdev, tgtdev->q_depth); lim = queue_limits_start_update(sdev->request_queue); mpi3mr_configure_tgt_dev(tgtdev, &lim); WARN_ON_ONCE(queue_limits_commit_update(sdev->request_queue, &lim)); } /** * mpi3mr_refresh_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. */ static void mpi3mr_refresh_tgtdevs(struct mpi3mr_ioc *mrioc) { struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; struct mpi3mr_stgt_priv_data *tgt_priv; dprint_reset(mrioc, "refresh target devices: check for removals\n"); list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, list) { if (((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) || tgtdev->is_hidden) && tgtdev->host_exposed && tgtdev->starget && tgtdev->starget->hostdata) { tgt_priv = tgtdev->starget->hostdata; tgt_priv->dev_removed = 1; atomic_set(&tgt_priv->block_io, 0); } } 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, true); mpi3mr_tgtdev_put(tgtdev); } else if (tgtdev->is_hidden & tgtdev->host_exposed) { dprint_reset(mrioc, "hiding target device with perst_id(%d)\n", tgtdev->perst_id); mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); } } tgtdev = NULL; list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) && !tgtdev->is_hidden) { if (!tgtdev->host_exposed) mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id); else if (tgtdev->starget) starget_for_each_device(tgtdev->starget, (void *)tgtdev, mpi3mr_update_sdev); } } } /** * 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; struct mpi3mr_enclosure_node *enclosure_dev = 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->io_unit_port = dev_pg0->io_unit_port; 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); tgtdev->devpg0_flag = le16_to_cpu(dev_pg0->flags); if (tgtdev->encl_handle) enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc, tgtdev->encl_handle); if (enclosure_dev) tgtdev->enclosure_logical_id = le64_to_cpu( enclosure_dev->pg0.enclosure_logical_id); flags = tgtdev->devpg0_flag; 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; switch (flags & MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_MASK) { case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_256_LB: tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS; break; case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_2048_LB: tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS; break; case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_NO_LIMIT: default: tgtdev->wslen = 0; break; } 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; if (is_added == true) atomic_set(&scsi_tgt_priv_data->block_io, 0); scsi_tgt_priv_data->wslen = tgtdev->wslen; } 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); tgtdev->dev_spec.sas_sata_inf.phy_id = sasinf->phy_num; tgtdev->dev_spec.sas_sata_inf.attached_phy_id = sasinf->attached_phy_identifier; 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; if (((tgtdev->devpg0_flag & MPI3_DEVICE0_FLAGS_ATT_METHOD_DIR_ATTACHED) && (tgtdev->devpg0_flag & MPI3_DEVICE0_FLAGS_ATT_METHOD_VIRTUAL)) || (tgtdev->parent_handle == 0xFFFF)) tgtdev->non_stl = 1; if (tgtdev->dev_spec.sas_sata_inf.hba_port) tgtdev->dev_spec.sas_sata_inf.hba_port->port_id = dev_pg0->io_unit_port; 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; tgtdev->non_stl = 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->non_stl = 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 (delete) mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); if (cleanup) { mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, false); 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_free_enclosure_list - release enclosures * @mrioc: Adapter instance reference * * Free memory allocated during encloure add. * * Return nothing. */ void mpi3mr_free_enclosure_list(struct mpi3mr_ioc *mrioc) { struct mpi3mr_enclosure_node *enclosure_dev, *enclosure_dev_next; list_for_each_entry_safe(enclosure_dev, enclosure_dev_next, &mrioc->enclosure_list, list) { list_del(&enclosure_dev->list); kfree(enclosure_dev); } } /** * mpi3mr_enclosure_find_by_handle - enclosure search by handle * @mrioc: Adapter instance reference * @handle: Firmware device handle of the enclosure * * This searches for enclosure device based on handle, then returns the * enclosure object. * * Return: Enclosure object reference or NULL */ struct mpi3mr_enclosure_node *mpi3mr_enclosure_find_by_handle( struct mpi3mr_ioc *mrioc, u16 handle) { struct mpi3mr_enclosure_node *enclosure_dev, *r = NULL; list_for_each_entry(enclosure_dev, &mrioc->enclosure_list, list) { if (le16_to_cpu(enclosure_dev->pg0.enclosure_handle) != handle) continue; r = enclosure_dev; goto out; } out: return r; } /** * mpi3mr_encldev_add_chg_evt_debug - debug for enclosure event * @mrioc: Adapter instance reference * @encl_pg0: Enclosure page 0. * @is_added: Added event or not * * Return nothing. */ static void mpi3mr_encldev_add_chg_evt_debug(struct mpi3mr_ioc *mrioc, struct mpi3_enclosure_page0 *encl_pg0, u8 is_added) { char *reason_str = NULL; if (!(mrioc->logging_level & MPI3_DEBUG_EVENT_WORK_TASK)) return; if (is_added) reason_str = "enclosure added"; else reason_str = "enclosure dev status changed"; ioc_info(mrioc, "%s: handle(0x%04x), enclosure logical id(0x%016llx)\n", reason_str, le16_to_cpu(encl_pg0->enclosure_handle), (unsigned long long)le64_to_cpu(encl_pg0->enclosure_logical_id)); ioc_info(mrioc, "number of slots(%d), port(%d), flags(0x%04x), present(%d)\n", le16_to_cpu(encl_pg0->num_slots), encl_pg0->io_unit_port, le16_to_cpu(encl_pg0->flags), ((le16_to_cpu(encl_pg0->flags) & MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4)); } /** * mpi3mr_encldev_add_chg_evt_bh - Enclosure evt bottomhalf * @mrioc: Adapter instance reference * @fwevt: Firmware event reference * * Prints information about the Enclosure device status or * Enclosure add events if logging is enabled and add or remove * the enclosure from the controller's internal list of * enclosures. * * Return: Nothing. */ static void mpi3mr_encldev_add_chg_evt_bh(struct mpi3mr_ioc *mrioc, struct mpi3mr_fwevt *fwevt) { struct mpi3mr_enclosure_node *enclosure_dev = NULL; struct mpi3_enclosure_page0 *encl_pg0; u16 encl_handle; u8 added, present; encl_pg0 = (struct mpi3_enclosure_page0 *) fwevt->event_data; added = (fwevt->event_id == MPI3_EVENT_ENCL_DEVICE_ADDED) ? 1 : 0; mpi3mr_encldev_add_chg_evt_debug(mrioc, encl_pg0, added); encl_handle = le16_to_cpu(encl_pg0->enclosure_handle); present = ((le16_to_cpu(encl_pg0->flags) & MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4); if (encl_handle) enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc, encl_handle); if (!enclosure_dev && present) { enclosure_dev = kzalloc(sizeof(struct mpi3mr_enclosure_node), GFP_KERNEL); if (!enclosure_dev) return; list_add_tail(&enclosure_dev->list, &mrioc->enclosure_list); } if (enclosure_dev) { if (!present) { list_del(&enclosure_dev->list); kfree(enclosure_dev); } else memcpy(&enclosure_dev->pg0, encl_pg0, sizeof(enclosure_dev->pg0)); } } /** * 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), port(%d), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n", __func__, le16_to_cpu(event_data->expander_dev_handle), event_data->io_unit_port, 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; u64 exp_sas_address = 0, parent_sas_address = 0; struct mpi3mr_hba_port *hba_port = NULL; struct mpi3mr_tgt_dev *tgtdev = NULL; struct mpi3mr_sas_node *sas_expander = NULL; unsigned long flags; u8 link_rate, prev_link_rate, parent_phy_number; mpi3mr_sastopochg_evt_debug(mrioc, event_data); if (mrioc->sas_transport_enabled) { hba_port = mpi3mr_get_hba_port_by_id(mrioc, event_data->io_unit_port); if (le16_to_cpu(event_data->expander_dev_handle)) { spin_lock_irqsave(&mrioc->sas_node_lock, flags); sas_expander = __mpi3mr_expander_find_by_handle(mrioc, le16_to_cpu(event_data->expander_dev_handle)); if (sas_expander) { exp_sas_address = sas_expander->sas_address; hba_port = sas_expander->hba_port; } spin_unlock_irqrestore(&mrioc->sas_node_lock, flags); parent_sas_address = exp_sas_address; } else parent_sas_address = mrioc->sas_hba.sas_address; } 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, false); mpi3mr_tgtdev_put(tgtdev); break; case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING: case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED: case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE: { if (!mrioc->sas_transport_enabled || tgtdev->non_stl || tgtdev->is_hidden) break; link_rate = event_data->phy_entry[i].link_rate >> 4; prev_link_rate = event_data->phy_entry[i].link_rate & 0xF; if (link_rate == prev_link_rate) break; if (!parent_sas_address) break; parent_phy_number = event_data->start_phy_num + i; mpi3mr_update_links(mrioc, parent_sas_address, handle, parent_phy_number, link_rate, hba_port); break; } default: break; } if (tgtdev) mpi3mr_tgtdev_put(tgtdev); } if (mrioc->sas_transport_enabled && (event_data->exp_status == MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING)) { if (sas_expander) mpi3mr_expander_remove(mrioc, exp_sas_address, hba_port); } } /** * 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, false); 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) { struct mpi3_device_page0 *dev_pg0 = NULL; u16 perst_id, handle, dev_info; struct mpi3_device0_sas_sata_format *sasinf = NULL; mpi3mr_fwevt_del_from_list(mrioc, fwevt); mrioc->current_event = fwevt; if (mrioc->stop_drv_processing) goto out; if (mrioc->unrecoverable) { dprint_event_bh(mrioc, "ignoring event(0x%02x) in bottom half handler due to unrecoverable controller\n", fwevt->event_id); goto out; } if (!fwevt->process_evt) goto evt_ack; switch (fwevt->event_id) { case MPI3_EVENT_DEVICE_ADDED: { dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data; perst_id = le16_to_cpu(dev_pg0->persistent_id); handle = le16_to_cpu(dev_pg0->dev_handle); if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID) mpi3mr_report_tgtdev_to_host(mrioc, perst_id); else if (mrioc->sas_transport_enabled && (dev_pg0->device_form == MPI3_DEVICE_DEVFORM_SAS_SATA)) { sasinf = &dev_pg0->device_specific.sas_sata_format; dev_info = le16_to_cpu(sasinf->device_info); if (!mrioc->sas_hba.num_phys) mpi3mr_sas_host_add(mrioc); else mpi3mr_sas_host_refresh(mrioc); if (mpi3mr_is_expander_device(dev_info)) mpi3mr_expander_add(mrioc, handle); } break; } case MPI3_EVENT_DEVICE_INFO_CHANGED: { dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data; perst_id = le16_to_cpu(dev_pg0->persistent_id); if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID) mpi3mr_devinfochg_evt_bh(mrioc, dev_pg0); break; } case MPI3_EVENT_DEVICE_STATUS_CHANGE: { mpi3mr_devstatuschg_evt_bh(mrioc, fwevt); break; } case MPI3_EVENT_ENCL_DEVICE_ADDED: case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE: { mpi3mr_encldev_add_chg_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; } case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH: { while (mrioc->device_refresh_on) msleep(500); dprint_event_bh(mrioc, "scan for non responding and newly added devices after soft reset started\n"); if (mrioc->sas_transport_enabled) { mpi3mr_refresh_sas_ports(mrioc); mpi3mr_refresh_expanders(mrioc); } mpi3mr_refresh_tgtdevs(mrioc); ioc_info(mrioc, "scan for non responding and newly added devices after soft reset completed\n"); 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; unsigned long flags; perst_id = le16_to_cpu(dev_pg0->persistent_id); if (perst_id == MPI3_DEVICE0_PERSISTENTID_INVALID) return retval; spin_lock_irqsave(&mrioc->tgtdev_lock, flags); tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); if (tgtdev) tgtdev->state = MPI3MR_DEV_CREATED; spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 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; struct mpi3mr_tgt_dev *tgtdev = NULL; unsigned long flags; spin_lock_irqsave(&mrioc->tgtdev_lock, flags); tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle); if (tgtdev && (iou_rc == MPI3_CTRL_OP_REMOVE_DEVICE)) tgtdev->state = MPI3MR_DEV_REMOVE_HS_STARTED; spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 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_add_event_wait_for_device_refresh - Add Wait for Device Refresh Event * @mrioc: Adapter instance reference * * Add driver specific event to make sure that the driver won't process the * events until all the devices are refreshed during soft reset. * * Return: Nothing */ void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc) { struct mpi3mr_fwevt *fwevt = NULL; fwevt = mpi3mr_alloc_fwevt(0); if (!fwevt) { dprint_event_th(mrioc, "failed to schedule bottom half handler for event(0x%02x)\n", MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH); return; } fwevt->mrioc = mrioc; fwevt->event_id = MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH; fwevt->send_ack = 0; fwevt->process_evt = 1; fwevt->evt_ctx = 0; fwevt->event_data_size = 0; mpi3mr_fwevt_add_to_list(mrioc, fwevt); } /** * 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: case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE: case MPI3_EVENT_ENCL_DEVICE_ADDED: { 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_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; dev_handle = stgt_priv_data->dev_handle; } } 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) && mrioc->logging_level & MPI3_DEBUG_SCSI_ERROR) { 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; unsigned long flags; spin_lock_irqsave(&mrioc->chain_buf_lock, flags); do { 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); break; } cmd_idx = -1; } while (retry_count--); spin_unlock_irqrestore(&mrioc->chain_buf_lock, flags); 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 > mrioc->max_sgl_entries) { 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); mpi3mr_process_admin_reply_q(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_setup_divert_ws - Setup Divert IO flag for write same * @mrioc: Adapter instance reference * @scmd: SCSI command reference * @scsiio_req: MPI3 SCSI IO request * @scsiio_flags: Pointer to MPI3 SCSI IO Flags * @wslen: write same max length * * Gets values of unmap, ndob and number of blocks from write * same scsi io and based on these values it sets divert IO flag * and reason for diverting IO to firmware. * * Return: Nothing */ static inline void mpi3mr_setup_divert_ws(struct mpi3mr_ioc *mrioc, struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req, u32 *scsiio_flags, u16 wslen) { u8 unmap = 0, ndob = 0; u8 opcode = scmd->cmnd[0]; u32 num_blocks = 0; u16 sa = (scmd->cmnd[8] << 8) | (scmd->cmnd[9]); if (opcode == WRITE_SAME_16) { unmap = scmd->cmnd[1] & 0x08; ndob = scmd->cmnd[1] & 0x01; num_blocks = get_unaligned_be32(scmd->cmnd + 10); } else if ((opcode == VARIABLE_LENGTH_CMD) && (sa == WRITE_SAME_32)) { unmap = scmd->cmnd[10] & 0x08; ndob = scmd->cmnd[10] & 0x01; num_blocks = get_unaligned_be32(scmd->cmnd + 28); } else return; if ((unmap) && (ndob) && (num_blocks > wslen)) { scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE; *scsiio_flags |= MPI3_SCSIIO_FLAGS_DIVERT_REASON_WRITE_SAME_TOO_LARGE; } } /** * mpi3mr_eh_host_reset - Host reset error handling callback * @scmd: SCSI command reference * * Issue controller reset * * 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); int retval = FAILED, ret; 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_bus_reset - Bus reset error handling callback * @scmd: SCSI command reference * * Checks whether pending I/Os are present for the RAID volume; * if not there's no need to reset the adapter. * * Return: SUCCESS of successful reset else FAILED */ static int mpi3mr_eh_bus_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; 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; } if (retval == FAILED) mpi3mr_print_pending_host_io(mrioc); sdev_printk(KERN_INFO, scmd->device, "Bus 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) { struct scmd_priv *cmd_priv = scsi_cmd_priv(scmd); sdev_printk(KERN_INFO, scmd->device, "%s:target(handle = 0x%04x) is removed, target reset is not issued\n", mrioc->name, dev_handle); if (!cmd_priv->in_lld_scope || cmd_priv->host_tag == MPI3MR_HOSTTAG_INVALID) retval = SUCCESS; else 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) { struct scmd_priv *cmd_priv = scsi_cmd_priv(scmd); sdev_printk(KERN_INFO, scmd->device, "%s: device(handle = 0x%04x) is removed, device(LUN) reset is not issued\n", mrioc->name, dev_handle); if (!cmd_priv->in_lld_scope || cmd_priv->host_tag == MPI3MR_HOSTTAG_INVALID) retval = SUCCESS; else 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 = NULL; unsigned long flags; struct scsi_target *starget; struct sas_rphy *rphy = NULL; 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); if (starget->channel == mrioc->scsi_device_channel) tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); else if (mrioc->sas_transport_enabled && !starget->channel) { rphy = dev_to_rphy(starget->dev.parent); tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc, rphy->identify.sas_address, rphy); } 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_device_configure - Slave configure callback handler * @sdev: SCSI device reference * @lim: queue limits * * Configure queue depth, max hardware sectors and virt boundary * as required * * Return: 0 always. */ static int mpi3mr_device_configure(struct scsi_device *sdev, struct queue_limits *lim) { struct scsi_target *starget; struct Scsi_Host *shost; struct mpi3mr_ioc *mrioc; struct mpi3mr_tgt_dev *tgt_dev = NULL; unsigned long flags; int retval = 0; struct sas_rphy *rphy = NULL; starget = scsi_target(sdev); shost = dev_to_shost(&starget->dev); mrioc = shost_priv(shost); spin_lock_irqsave(&mrioc->tgtdev_lock, flags); if (starget->channel == mrioc->scsi_device_channel) tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); else if (mrioc->sas_transport_enabled && !starget->channel) { rphy = dev_to_rphy(starget->dev.parent); tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc, rphy->identify.sas_address, rphy); } 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); mpi3mr_configure_tgt_dev(tgt_dev, lim); 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 = NULL; struct mpi3mr_sdev_priv_data *scsi_dev_priv_data; unsigned long flags; struct scsi_target *starget; int retval = 0; struct sas_rphy *rphy = NULL; 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); if (starget->channel == mrioc->scsi_device_channel) tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); else if (mrioc->sas_transport_enabled && !starget->channel) { rphy = dev_to_rphy(starget->dev.parent); tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc, rphy->identify.sas_address, rphy); } 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; struct sas_rphy *rphy = NULL; 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); if (starget->channel == mrioc->scsi_device_channel) { 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; if ((tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_PCIE) && ((tgt_dev->dev_spec.pcie_inf.dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) && ((tgt_dev->dev_spec.pcie_inf.dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_MASK) != MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_0)) scsi_tgt_priv_data->dev_nvme_dif = 1; scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled; scsi_tgt_priv_data->wslen = tgt_dev->wslen; 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; } else if (mrioc->sas_transport_enabled && !starget->channel) { rphy = dev_to_rphy(starget->dev.parent); tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc, rphy->identify.sas_address, rphy); if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl && (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA)) { 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; scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled; scsi_tgt_priv_data->wslen = tgt_dev->wslen; tgt_dev->starget = starget; atomic_set(&scsi_tgt_priv_data->block_io, 0); retval = 0; } 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; } stgt_priv_data = sdev_priv_data->tgt_priv_data; dev_handle = stgt_priv_data->dev_handle; /* Avoid error handling escalation when device is removed or blocked */ if (scmd->device->host->shost_state == SHOST_RECOVERY && scmd->cmnd[0] == TEST_UNIT_READY && (stgt_priv_data->dev_removed || (dev_handle == MPI3MR_INVALID_DEV_HANDLE))) { scsi_build_sense(scmd, 0, UNIT_ATTENTION, 0x29, 0x07); scsi_done(scmd); goto out; } if (mrioc->reset_in_progress) { retval = SCSI_MLQUEUE_HOST_BUSY; 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 (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 (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); if (stgt_priv_data->wslen) mpi3mr_setup_divert_ws(mrioc, scmd, scsiio_req, &scsiio_flags, stgt_priv_data->wslen); 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 const 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, .device_configure = mpi3mr_device_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_bus_reset_handler = mpi3mr_eh_bus_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_DEFAULT_SGL_ENTRIES, /* max xfer supported is 1M (2K in 512 byte sized sectors) */ .max_sectors = (MPI3MR_DEFAULT_MAX_IO_SIZE / 512), .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); retval = ida_alloc_range(&mrioc_ida, 1, U8_MAX, GFP_KERNEL); if (retval < 0) goto id_alloc_failed; mrioc->id = (u8)retval; 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); spin_lock_init(&mrioc->sas_node_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); INIT_LIST_HEAD(&mrioc->sas_expander_list); INIT_LIST_HEAD(&mrioc->hba_port_table_list); INIT_LIST_HEAD(&mrioc->enclosure_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); mpi3mr_init_drv_cmd(&mrioc->cfg_cmds, MPI3MR_HOSTTAG_CFG_CMDS); mpi3mr_init_drv_cmd(&mrioc->transport_cmds, MPI3MR_HOSTTAG_TRANSPORT_CMDS); for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i], MPI3MR_HOSTTAG_DEVRMCMD_MIN + i); for (i = 0; i < MPI3MR_NUM_EVTACKCMD; i++) mpi3mr_init_drv_cmd(&mrioc->evtack_cmds[i], MPI3MR_HOSTTAG_EVTACKCMD_MIN + i); if ((pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) && !pdev->revision) mrioc->enable_segqueue = false; else 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; mrioc->max_sgl_entries = max_sgl_entries; if (max_sgl_entries > MPI3MR_MAX_SGL_ENTRIES) mrioc->max_sgl_entries = MPI3MR_MAX_SGL_ENTRIES; else if (max_sgl_entries < MPI3MR_DEFAULT_SGL_ENTRIES) mrioc->max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES; else { mrioc->max_sgl_entries /= MPI3MR_DEFAULT_SGL_ENTRIES; mrioc->max_sgl_entries *= MPI3MR_DEFAULT_SGL_ENTRIES; } /* 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 = mrioc->max_sgl_entries; 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: ida_free(&mrioc_ida, mrioc->id); spin_lock(&mrioc_list_lock); list_del(&mrioc->list); spin_unlock(&mrioc_list_lock); id_alloc_failed: 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; struct mpi3mr_hba_port *port, *hba_port_next; struct mpi3mr_sas_node *sas_expander, *sas_expander_next; if (!shost) return; mrioc = shost_priv(shost); while (mrioc->reset_in_progress || mrioc->is_driver_loading) ssleep(1); if (!pci_device_is_present(mrioc->pdev)) { mrioc->unrecoverable = 1; mpi3mr_flush_cmds_for_unrecovered_controller(mrioc); } 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); if (mrioc->sas_transport_enabled) sas_remove_host(shost); else 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, true); mpi3mr_tgtdev_put(tgtdev); } mpi3mr_stop_watchdog(mrioc); mpi3mr_cleanup_ioc(mrioc); mpi3mr_free_mem(mrioc); mpi3mr_cleanup_resources(mrioc); spin_lock_irqsave(&mrioc->sas_node_lock, flags); list_for_each_entry_safe_reverse(sas_expander, sas_expander_next, &mrioc->sas_expander_list, list) { spin_unlock_irqrestore(&mrioc->sas_node_lock, flags); mpi3mr_expander_node_remove(mrioc, sas_expander); spin_lock_irqsave(&mrioc->sas_node_lock, flags); } list_for_each_entry_safe(port, hba_port_next, &mrioc->hba_port_table_list, list) { ioc_info(mrioc, "removing hba_port entry: %p port: %d from hba_port list\n", port, port->port_id); list_del(&port->list); kfree(port); } spin_unlock_irqrestore(&mrioc->sas_node_lock, flags); if (mrioc->sas_hba.num_phys) { kfree(mrioc->sas_hba.phy); mrioc->sas_hba.phy = NULL; mrioc->sas_hba.num_phys = 0; } ida_free(&mrioc_ida, mrioc->id); 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); } /** * mpi3mr_suspend - PCI power management suspend callback * @dev: Device struct * * Change the power state to the given value and cleanup the IOC * by issuing MUR and shutdown notification * * Return: 0 always. */ static int __maybe_unused mpi3mr_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct Scsi_Host *shost = pci_get_drvdata(pdev); struct mpi3mr_ioc *mrioc; 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); ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state\n", pdev, pci_name(pdev)); mpi3mr_cleanup_resources(mrioc); return 0; } /** * mpi3mr_resume - PCI power management resume callback * @dev: Device struct * * 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 __maybe_unused mpi3mr_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); 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); 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_invalidate_devhandles(mrioc); mpi3mr_free_enclosure_list(mrioc); mpi3mr_memset_buffers(mrioc); r = mpi3mr_reinit_ioc(mrioc, 1); if (r) { ioc_err(mrioc, "resuming controller failed[%d]\n", r); return r; } ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME); scsi_unblock_requests(shost); mrioc->device_refresh_on = 0; mpi3mr_start_watchdog(mrioc); return 0; } 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) }, { PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM, MPI3_MFGPAGE_DEVID_SAS5116_MPI, PCI_ANY_ID, PCI_ANY_ID) }, { PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM, MPI3_MFGPAGE_DEVID_SAS5116_MPI_MGMT, PCI_ANY_ID, PCI_ANY_ID) }, { 0 } }; MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table); static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume); 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, .driver.pm = &mpi3mr_pm_ops, }; 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); mpi3mr_transport_template = sas_attach_transport(&mpi3mr_transport_functions); if (!mpi3mr_transport_template) { pr_err("%s failed to load due to sas transport attach failure\n", MPI3MR_DRIVER_NAME); return -ENODEV; } 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); goto err_pci_reg_fail; } ret_val = driver_create_file(&mpi3mr_pci_driver.driver, &driver_attr_event_counter); if (ret_val) goto err_event_counter; return ret_val; err_event_counter: pci_unregister_driver(&mpi3mr_pci_driver); err_pci_reg_fail: sas_release_transport(mpi3mr_transport_template); 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); sas_release_transport(mpi3mr_transport_template); ida_destroy(&mrioc_ida); } module_init(mpi3mr_init); module_exit(mpi3mr_exit);
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