diff options
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_os.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_os.c | 5502 |
1 files changed, 5502 insertions, 0 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c new file mode 100644 index 000000000..c7c752574 --- /dev/null +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -0,0 +1,5502 @@ +// 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" + +/* global driver scop variables */ +LIST_HEAD(mrioc_list); +DEFINE_SPINLOCK(mrioc_list_lock); +static int mrioc_ids; +static int warn_non_secure_ctlr; +atomic64_t event_counter; + +MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR); +MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC); +MODULE_LICENSE(MPI3MR_DRIVER_LICENSE); +MODULE_VERSION(MPI3MR_DRIVER_VERSION); + +/* Module parameters*/ +int prot_mask = -1; +module_param(prot_mask, int, 0); +MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07"); + +static int prot_guard_mask = 3; +module_param(prot_guard_mask, int, 0); +MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3"); +static int logging_level; +module_param(logging_level, int, 0); +MODULE_PARM_DESC(logging_level, + " bits for enabling additional logging info (default=0)"); +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; +} + +/** + * mpi3mr_update_sdev - Update SCSI device information + * @sdev: SCSI device reference + * @data: target device reference + * + * This is an iterator function called for each SCSI device in a + * target to update the target specific information into each + * SCSI device. + * + * Return: Nothing. + */ +static void +mpi3mr_update_sdev(struct scsi_device *sdev, void *data) +{ + struct mpi3mr_tgt_dev *tgtdev; + + tgtdev = (struct mpi3mr_tgt_dev *)data; + if (!tgtdev) + return; + + mpi3mr_change_queue_depth(sdev, tgtdev->q_depth); + switch (tgtdev->dev_type) { + case MPI3_DEVICE_DEVFORM_PCIE: + /*The block layer hw sector size = 512*/ + if ((tgtdev->dev_spec.pcie_inf.dev_info & + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { + blk_queue_max_hw_sectors(sdev->request_queue, + tgtdev->dev_spec.pcie_inf.mdts / 512); + if (tgtdev->dev_spec.pcie_inf.pgsz == 0) + blk_queue_virt_boundary(sdev->request_queue, + ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); + else + blk_queue_virt_boundary(sdev->request_queue, + ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1)); + } + break; + default: + break; + } +} + +/** + * mpi3mr_rfresh_tgtdevs - Refresh target device exposure + * @mrioc: Adapter instance reference + * + * This is executed post controller reset to identify any + * missing devices during reset and remove from the upper layers + * or expose any newly detected device to the upper layers. + * + * Return: Nothing. + */ + +void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc) +{ + struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; + 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_rfresh_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; + } + } + 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 if the scmd is for a Physical Device, + * if the scmd is for RAID volume, then wait for + * MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any + * pending I/Os prior to issuing reset to the controller. + * + * Return: SUCCESS of successful reset else FAILED + */ +static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd) +{ + struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); + struct mpi3mr_stgt_priv_data *stgt_priv_data; + struct mpi3mr_sdev_priv_data *sdev_priv_data; + u8 dev_type = MPI3_DEVICE_DEVFORM_VD; + int retval = FAILED, ret; + + sdev_priv_data = scmd->device->hostdata; + if (sdev_priv_data && sdev_priv_data->tgt_priv_data) { + stgt_priv_data = sdev_priv_data->tgt_priv_data; + dev_type = stgt_priv_data->dev_type; + } + + if (dev_type == MPI3_DEVICE_DEVFORM_VD) { + mpi3mr_wait_for_host_io(mrioc, + MPI3MR_RAID_ERRREC_RESET_TIMEOUT); + if (!mpi3mr_get_fw_pending_ios(mrioc)) { + retval = SUCCESS; + goto out; + } + } + + mpi3mr_print_pending_host_io(mrioc); + ret = mpi3mr_soft_reset_handler(mrioc, + MPI3MR_RESET_FROM_EH_HOS, 1); + if (ret) + goto out; + + retval = SUCCESS; +out: + sdev_printk(KERN_INFO, scmd->device, + "Host reset is %s for scmd(%p)\n", + ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); + + return retval; +} + +/** + * mpi3mr_eh_target_reset - Target reset error handling callback + * @scmd: SCSI command reference + * + * Issue Target reset Task Management and verify the scmd is + * terminated successfully and return status accordingly. + * + * Return: SUCCESS of successful termination of the scmd else + * FAILED + */ +static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd) +{ + struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); + struct mpi3mr_stgt_priv_data *stgt_priv_data; + struct mpi3mr_sdev_priv_data *sdev_priv_data; + u16 dev_handle; + u8 resp_code = 0; + int retval = FAILED, ret = 0; + + sdev_printk(KERN_INFO, scmd->device, + "Attempting Target Reset! scmd(%p)\n", scmd); + scsi_print_command(scmd); + + sdev_priv_data = scmd->device->hostdata; + if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { + sdev_printk(KERN_INFO, scmd->device, + "SCSI device is not available\n"); + retval = SUCCESS; + goto out; + } + + stgt_priv_data = sdev_priv_data->tgt_priv_data; + dev_handle = stgt_priv_data->dev_handle; + if (stgt_priv_data->dev_removed) { + 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_slave_configure - Slave configure callback handler + * @sdev: SCSI device reference + * + * Configure queue depth, max hardware sectors and virt boundary + * as required + * + * Return: 0 always. + */ +static int mpi3mr_slave_configure(struct scsi_device *sdev) +{ + struct scsi_target *starget; + struct Scsi_Host *shost; + struct mpi3mr_ioc *mrioc; + struct mpi3mr_tgt_dev *tgt_dev = 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); + + switch (tgt_dev->dev_type) { + case MPI3_DEVICE_DEVFORM_PCIE: + /*The block layer hw sector size = 512*/ + if ((tgt_dev->dev_spec.pcie_inf.dev_info & + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == + MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { + blk_queue_max_hw_sectors(sdev->request_queue, + tgt_dev->dev_spec.pcie_inf.mdts / 512); + if (tgt_dev->dev_spec.pcie_inf.pgsz == 0) + blk_queue_virt_boundary(sdev->request_queue, + ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); + else + blk_queue_virt_boundary(sdev->request_queue, + ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1)); + } + break; + default: + break; + } + + mpi3mr_tgtdev_put(tgt_dev); + + return retval; +} + +/** + * mpi3mr_slave_alloc -Slave alloc callback handler + * @sdev: SCSI device reference + * + * Allocate per device(lun) private data and initialize it. + * + * Return: 0 on success -ENOMEM on memory allocation failure. + */ +static int mpi3mr_slave_alloc(struct scsi_device *sdev) +{ + struct Scsi_Host *shost; + struct mpi3mr_ioc *mrioc; + struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; + struct mpi3mr_tgt_dev *tgt_dev = 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, + .slave_configure = mpi3mr_slave_configure, + .target_destroy = mpi3mr_target_destroy, + .slave_destroy = mpi3mr_slave_destroy, + .scan_finished = mpi3mr_scan_finished, + .scan_start = mpi3mr_scan_start, + .change_queue_depth = mpi3mr_change_queue_depth, + .eh_device_reset_handler = mpi3mr_eh_dev_reset, + .eh_target_reset_handler = mpi3mr_eh_target_reset, + .eh_host_reset_handler = mpi3mr_eh_host_reset, + .bios_param = mpi3mr_bios_param, + .map_queues = mpi3mr_map_queues, + .mq_poll = mpi3mr_blk_mq_poll, + .no_write_same = 1, + .can_queue = 1, + .this_id = -1, + .sg_tablesize = MPI3MR_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); + mrioc->id = mrioc_ids++; + sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME); + sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id); + INIT_LIST_HEAD(&mrioc->list); + spin_lock(&mrioc_list_lock); + list_add_tail(&mrioc->list, &mrioc_list); + spin_unlock(&mrioc_list_lock); + + spin_lock_init(&mrioc->admin_req_lock); + spin_lock_init(&mrioc->reply_free_queue_lock); + spin_lock_init(&mrioc->sbq_lock); + spin_lock_init(&mrioc->fwevt_lock); + spin_lock_init(&mrioc->tgtdev_lock); + spin_lock_init(&mrioc->watchdog_lock); + spin_lock_init(&mrioc->chain_buf_lock); + 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->revision) + mrioc->enable_segqueue = true; + + init_waitqueue_head(&mrioc->reset_waitq); + mrioc->logging_level = logging_level; + mrioc->shost = shost; + mrioc->pdev = pdev; + mrioc->stop_bsgs = 1; + + 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: + spin_lock(&mrioc_list_lock); + list_del(&mrioc->list); + spin_unlock(&mrioc_list_lock); + scsi_host_put(shost); +shost_failed: + return retval; +} + +/** + * mpi3mr_remove - PCI remove callback + * @pdev: PCI device instance + * + * Cleanup the IOC by issuing MUR and shutdown notification. + * Free up all memory and resources associated with the + * controllerand target devices, unregister the shost. + * + * Return: Nothing. + */ +static void mpi3mr_remove(struct pci_dev *pdev) +{ + struct Scsi_Host *shost = pci_get_drvdata(pdev); + struct mpi3mr_ioc *mrioc; + struct workqueue_struct *wq; + unsigned long flags; + struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; + 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; + } + + 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) + }, + { 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); +} + +module_init(mpi3mr_init); +module_exit(mpi3mr_exit); |